Place: Paris and its vicinity
Time: Beginning of the 19th century
Act 1
The salon in Violetta's house
Violetta Valéry, a famed courtesan, throws a lavish party at her Paris salon to celebrate her recovery from an illness. Gastone, a viscount, has brought with him a friend, Alfredo Germont, a young bourgeois from a provincial family who has long adored Violetta from afar. While walking to the salon, Gastone tells Violetta that Alfredo loves her, and that while she was ill, he came to her house every day. Alfredo joins them, admitting the truth of Gastone's remarks.
Baron Douphol, Violetta's current lover, waits nearby to escort her to the salon; once there, the Baron is asked to give a toast, but refuses, and the crowd turns to Alfredo, who agrees to sing a brindisi – a drinking song (Alfredo, Violetta, chorus: Libiamo ne' lieti calici – "Let's drink from the joyful cups").
From the next room, the sound of the orchestra is heard and the guests move there to dance. After a series of severe coughs and almost fainting, Violetta begins to feel dizzy and asks her guests to go ahead and to leave her to rest until she recovers. While the guests dance in the next room, Violetta looks at her pale face in her mirror. Alfredo enters and expresses his concern for her fragile health, later declaring his love for her (Alfredo, Violetta: Un dì, felice, eterea – "One day, happy and ethereal"). At first, she rejects him because his love means nothing to her, but there is something about Alfredo that touches her heart. He is about to leave when she gives him a flower, telling him to return it when it has wilted, which will be the very next day.
After the guests leave, Violetta wonders if Alfredo could actually be the one in her life (Violetta: È strano! ... Ah, fors' è lui – "Ah, perhaps he is the one"). But she concludes that she needs freedom to live her life (Violetta, Alfredo: Sempre libera – "Always free"). From off stage, Alfredo's voice is heard singing about love as he walks down the street.
Act 2
Scene 1: Violetta's country house outside Paris
Three months later, Alfredo and Violetta are living together in a peaceful country house outside Paris. Violetta has fallen in love with Alfredo and she has completely abandoned her former life. Alfredo sings of their happy life together (Alfredo: De' miei bollenti spiriti / Il giovanile ardore – "The youthful ardor of my ebullient spirits"). Annina, the maid, arrives from Paris, and, when questioned by Alfredo, tells him that she went there to sell the horses, carriages and everything owned by Violetta to support their country lifestyle.
Alfredo is shocked to learn this and leaves for Paris immediately to settle matters himself. Violetta returns home and receives an invitation from her friend, Flora, to a party in Paris that evening. Alfredo's father, Giorgio Germont, is announced and demands that she break off her relationship with his son for the sake of his family, since he reveals that Violetta's relationship with Alfredo has threatened his daughter's engagement (Giorgio: Pura siccome un angelo, Iddio mi diè una figlia – "Pure as an angel, God gave me a daughter") because of Violetta's reputation. Meanwhile, he reluctantly becomes impressed by Violetta's nobility, something which he did not expect from a courtesan. She responds that she cannot end the relationship because she loves him so much, but Giorgio pleads with her for the sake of his family. With growing remorse, she finally agrees (Violetta, Giorgio: Dite alla giovine, sì bella e pura, – "Tell the young girl, so beautiful and pure,") and says goodbye to Giorgio. In a gesture of gratitude for her kindness and sacrifice, Giorgio kisses her forehead before leaving her weeping alone.
Violetta gives a note to Annina to send to Flora accepting the party invitation and, as she is writing a farewell letter to Alfredo, he enters. She can barely control her sadness and tears; she tells him repeatedly of her unconditional love (Violetta: Amami, Alfredo, amami quant'io t'amo – "Love me, Alfredo, love me as I love you"). Before rushing out and setting off for Paris, she hands the farewell letter to her servant to give to Alfredo.
Soon, the servant brings the letter to Alfredo and, as soon as he has read it, Giorgio returns and attempts to comfort his son, reminding him of his family in Provence (Giorgio: Di Provenza il mar, il suol chi dal cor ti cancellò? – "Who erased the sea, the land of Provence from your heart?"). Alfredo suspects that the Baron is behind his separation with Violetta, and the party invitation, which he finds on the desk, strengthens his suspicions. He decides to confront Violetta at the party. Giorgio tries to stop Alfredo, but he rushes out.
Scene 2: Party at Flora's house
At the party, the Marquis tells Flora that Violetta and Alfredo have separated, much to the amazement of everyone who had previously seen the happy couple. She calls for the entertainers to perform for the guests (Chorus: Noi siamo zingarelle venute da lontano – "We are gypsy girls who have come from afar"; Di Madride noi siam mattadori – "We are matadors from Madrid"). Gastone and his friends join the matadors and sing (Gastone, chorus, dancers: È Piquillo un bel gagliardo Biscaglino mattador – "Piquillo is a bold and handsome matador from Biscay").
Violetta arrives with Baron Douphol. They see Alfredo at the gambling table. When he sees them, Alfredo loudly proclaims that he will take Violetta home with him. Feeling annoyed, the Baron goes to the gambling table and joins him in a game. As they bet, Alfredo wins some large sums until Flora announces that supper is ready. Alfredo leaves with handfuls of money.
As everyone is leaving the room, Violetta has asked Alfredo to see her. Fearing that the Baron's anger will lead him to challenge Alfredo to a duel, she gently asks Alfredo to leave. Alfredo misunderstands her apprehension and demands that she admit that she loves the Baron. In grief, she makes that admission and, furiously, Alfredo calls the guests to witness what he has to say (Questa donna conoscete? – "You know this woman?"). He humiliates and denounces Violetta in front of the guests and then throws his winnings at her feet in payment for her services. She faints onto the floor. The guests reprimand Alfredo: Di donne ignobile insultatore, di qua allontanati, ne desti orror! ("Ignoble insulter of women, go away from here, you fill us with horror!").
In search of his son, Giorgio enters the hall and, knowing the real significance of the scene, denounces his son's behavior (Giorgio, Alfredo, Violetta, chorus: Di sprezzo degno sè stesso rende chi pur nell'ira la donna offende. – "A man, who even in anger, offends a woman renders himself deserving of contempt.").
Flora and the ladies attempt to persuade Violetta to leave the dining room, but Violetta turns to Alfredo: Alfredo, Alfredo, di questo core non puoi comprendere tutto l'amore... – "Alfredo, Alfredo, you can't understand all the love in this heart...".
Act 3
Violetta's bedroom
Dr. Grenvil tells Annina that Violetta will not live long since her tuberculosis has worsened. Alone in her room, Violetta reads a letter from Alfredo's father telling her that the Baron was only wounded in his duel with Alfredo. He has informed Alfredo of the sacrifice she has made for him and his sister; and that he is sending his son to see her as quickly as possible to ask for her forgiveness. But Violetta senses it is too late (Violetta: Addio, del passato bei sogni ridenti – "Farewell, lovely, happy dreams of the past").
Annina rushes in the room to tell Violetta of Alfredo's arrival. The lovers are reunited and Alfredo suggests that they leave Paris (Alfredo, Violetta: Parigi, o cara, noi lasceremo – "We will leave Paris, O beloved").
But it is too late: she knows her time is up (Alfredo, Violetta: Gran Dio!...morir sì giovane – "Great God!...to die so young"). Alfredo's father enters with the doctor, regretting what he has done. After singing a duet with Alfredo, Violetta suddenly revives, exclaiming that the pain and discomfort have left her. A moment later, she dies in Alfredo's arms.

Place: Paris
Time: Around 1830
Act 1
In the four bohemians' garret (Christmas Eve)
Marcello is painting while Rodolfo gazes out of the window. They complain of the cold. In order to keep warm, they burn the manuscript of Rodolfo's drama. Colline, the philosopher, enters shivering and disgruntled at not having been able to pawn some books. Schaunard, the musician of the group, arrives with food, wine and cigars. He explains the source of his riches: a job with an eccentric English gentleman, who ordered him to play his violin to a parrot until it died. The others hardly listen to his tale as they set up the table to eat and drink. Schaunard interrupts, telling them that they must save the food for the days ahead: tonight they will all celebrate his good fortune by dining at Cafe Momus, and he will pay.
The friends are interrupted by Benoît, the landlord, who arrives to collect the rent. They flatter him and ply him with wine. In his drunkenness, he begins to boast of his amorous adventures, but when he also reveals that he is married, they thrust him from the room—without the rent payment—in comic moral indignation. The rent money is divided for their evening out in the Quartier Latin.
Marcello, Schaunard and Colline go out, but Rodolfo remains alone for a moment in order to finish an article he is writing, promising to join his friends soon. There is a knock at the door. It is a girl who lives in another room in the building. Her candle has blown out, and she has no matches; she asks Rodolfo to light it. She is briefly overcome with faintness, and Rodolfo helps her to a chair and offers her a glass of wine. She thanks him. After a few minutes, she says that she is better and must go. But as she turns to leave, she realizes that she has lost her key.
Her candle goes out in the draught and Rodolfo's candle goes out too; the pair stumble in the dark. Rodolfo, eager to spend time with the girl, to whom he is already attracted, finds the key and pockets it, feigning innocence. He takes her cold hand (Che gelida manina—"What a cold little hand") and tells her of his life as a poet, then asks her to tell him more about her life. The girl says her name is Mimì (Sì, mi chiamano Mimì—"Yes, they call me Mimì"), and describes her simple life as an embroiderer. Impatiently, the waiting friends call Rodolfo. He answers and turns to see Mimì bathed in moonlight (duet, Rodolfo and Mimì: O soave fanciulla—"Oh lovely girl"). They realize that they have fallen in love. Rodolfo suggests remaining at home with Mimì, but she decides to accompany him to the Cafe Momus. As they leave, they sing of their newfound love.
Act 2
Quartier Latin (same evening)
A great crowd, including children, has gathered with street sellers announcing their wares (chorus: Aranci, datteri! Caldi i marroni!—"Oranges, dates! Hot chestnuts!"). The friends arrive; Rodolfo buys Mimì a bonnet from a vendor, while Colline buys a coat and Schaunard a horn. Parisians gossip with friends and bargain with the vendors; the children of the streets clamor to see the wares of Parpignol, the toy seller. The friends enter the Cafe Momus.
As the men and Mimì dine at the cafe, Musetta, formerly Marcello's sweetheart, arrives with her rich (and elderly) government minister admirer, Alcindoro, whom she is tormenting. It is clear she has tired of him. To the delight of the Parisians and the embarrassment of her patron, she sings a risqué song (Musetta's waltz: Quando m'en vo'—"When I go along"), hoping to reclaim Marcello's attention. The ploy works; at the same time, Mimì recognizes that Musetta truly loves Marcello. To be rid of Alcindoro for a bit, Musetta pretends to be suffering from a tight shoe and sends him to the shoemaker to get her shoe mended. Alcindoro leaves, and Musetta and Marcello fall rapturously into each other's arms.
The friends are presented with their bill. However, Schaunard's purse has gone missing and no one else has enough money to pay. The sly Musetta has the entire bill charged to Alcindoro. The sound of a military band is heard, and the friends leave. Alcindoro returns with the repaired shoe seeking Musetta. The waiter hands him the bill and, dumbfounded, Alcindoro sinks into a chair.
Act 3
At the toll gate at the Barrière d'Enfer (late February)
Peddlers pass through the barriers and enter the city. Mimì appears, coughing violently. She tries to find Marcello, who is currently living in a little tavern where he paints signs for the innkeeper. She tells him of her hard life with Rodolfo, who abandoned her the night before, and of Rodolfo's terrible jealousy (O buon Marcello, aiuto!—"Oh, good Marcello, help me!"). Marcello tells her that Rodolfo is asleep inside, and expresses concern about Mimì's cough. Rodolfo wakes up and comes out looking for Marcello. Mimì hides and overhears Rodolfo first telling Marcello that he left Mimì because of her coquettishness, but finally confessing that his jealousy is a sham: he fears she is slowly being consumed by a deadly illness (most likely tuberculosis, known by the catchall name "consumption" in the nineteenth century). Rodolfo, in his poverty, can do little to help Mimì and hopes that his pretended unkindness will inspire her to seek another, wealthier suitor (Marcello, finalmente—"Marcello, finally").
Out of kindness towards Mimì, Marcello tries to silence him, but she has already heard all. Her weeping and coughing reveal her presence, and Rodolfo hurries to her. Musetta's laughter is heard and Marcello goes to find out what has happened. Mimì tells Rodolfo that she is leaving him, and asks that they separate amicably (Mimì: Donde lieta uscì—"From here she happily left"); but their love for one another is too strong for the pair to part. As a compromise, they agree to remain together until the spring, when the world is coming to life again and no one feels truly alone. Meanwhile, Marcello has found Musetta, and the couple quarrel fiercely about Musetta's flirtatiousness: an antithetical counterpoint to the other pair's reconciliation (quartet: Mimì, Rodolfo, Musetta, Marcello: Addio dolce svegliare alla mattina!—"Goodbye, sweet awakening in the morning!").
Act 4
Back in the garret (some months later)
Marcello and Rodolfo are trying to work, though they are primarily talking about their girlfriends, who have left them and found wealthy lovers. Rodolfo has seen Musetta in a fine carriage and Marcello has seen Mimì dressed like a queen. The men both express their nostalgia (duet: O Mimì, tu più non torni—"O Mimì, will you not return?"). Schaunard and Colline arrive with a very frugal dinner and all parody eating a plentiful banquet, dance together and sing, before Schaunard and Colline engage in a mock duel.
Musetta suddenly appears; Mimì, who took up with a wealthy viscount after leaving Rodolfo in the spring, has left her patron. Musetta found her that day in the street, severely weakened by her illness, and Mimì begged Musetta to bring her to Rodolfo. Mimì, haggard and pale, is assisted onto a bed. Briefly, she feels as though she is recovering. Musetta and Marcello leave to sell Musetta's earrings in order to buy medicine, and Colline leaves to pawn his overcoat (Vecchia zimarra—"Old coat"). Schaunard leaves with Colline to give Mimì and Rodolfo some time together. Mimì tells Rodolfo that her love for him is her whole life (aria/duet, Mimì and Rodolfo: Sono andati?—"Have they gone?").
To Mimì's delight, Rodolfo presents her with the pink bonnet he bought her, which he has kept as a souvenir of their love. They remember past happiness and their first meeting—the candles, the lost key. Suddenly, Mimì is overwhelmed by a coughing fit. The others return, with a gift of a muff to warm Mimì's hands and some medicine. Mimì gently thanks Rodolfo for the muff, which she believes is a present from him, reassures him that she is better and falls asleep. Musetta prays. Schaunard discovers that Mimì has died. Rodolfo rushes to the bed, calling Mimì's name in anguish, weeping helplessly as the curtain falls.

Place: Paris
Time: Around 1830
Act 1
In the four bohemians' garret (Christmas Eve)
Marcello is painting while Rodolfo gazes out of the window. They complain of the cold. In order to keep warm, they burn the manuscript of Rodolfo's drama. Colline, the philosopher, enters shivering and disgruntled at not having been able to pawn some books. Schaunard, the musician of the group, arrives with food, wine and cigars. He explains the source of his riches: a job with an eccentric English gentleman, who ordered him to play his violin to a parrot until it died. The others hardly listen to his tale as they set up the table to eat and drink. Schaunard interrupts, telling them that they must save the food for the days ahead: tonight they will all celebrate his good fortune by dining at Cafe Momus, and he will pay.
The friends are interrupted by Benoît, the landlord, who arrives to collect the rent. They flatter him and ply him with wine. In his drunkenness, he begins to boast of his amorous adventures, but when he also reveals that he is married, they thrust him from the room—without the rent payment—in comic moral indignation. The rent money is divided for their evening out in the Quartier Latin.
Marcello, Schaunard and Colline go out, but Rodolfo remains alone for a moment in order to finish an article he is writing, promising to join his friends soon. There is a knock at the door. It is a girl who lives in another room in the building. Her candle has blown out, and she has no matches; she asks Rodolfo to light it. She is briefly overcome with faintness, and Rodolfo helps her to a chair and offers her a glass of wine. She thanks him. After a few minutes, she says that she is better and must go. But as she turns to leave, she realizes that she has lost her key.
Her candle goes out in the draught and Rodolfo's candle goes out too; the pair stumble in the dark. Rodolfo, eager to spend time with the girl, to whom he is already attracted, finds the key and pockets it, feigning innocence. He takes her cold hand (Che gelida manina—"What a cold little hand") and tells her of his life as a poet, then asks her to tell him more about her life. The girl says her name is Mimì (Sì, mi chiamano Mimì—"Yes, they call me Mimì"), and describes her simple life as an embroiderer. Impatiently, the waiting friends call Rodolfo. He answers and turns to see Mimì bathed in moonlight (duet, Rodolfo and Mimì: O soave fanciulla—"Oh lovely girl"). They realize that they have fallen in love. Rodolfo suggests remaining at home with Mimì, but she decides to accompany him to the Cafe Momus. As they leave, they sing of their newfound love.
Act 2
Quartier Latin (same evening)
A great crowd, including children, has gathered with street sellers announcing their wares (chorus: Aranci, datteri! Caldi i marroni!—"Oranges, dates! Hot chestnuts!"). The friends arrive; Rodolfo buys Mimì a bonnet from a vendor, while Colline buys a coat and Schaunard a horn. Parisians gossip with friends and bargain with the vendors; the children of the streets clamor to see the wares of Parpignol, the toy seller. The friends enter the Cafe Momus.
As the men and Mimì dine at the cafe, Musetta, formerly Marcello's sweetheart, arrives with her rich (and elderly) government minister admirer, Alcindoro, whom she is tormenting. It is clear she has tired of him. To the delight of the Parisians and the embarrassment of her patron, she sings a risqué song (Musetta's waltz: Quando m'en vo'—"When I go along"), hoping to reclaim Marcello's attention. The ploy works; at the same time, Mimì recognizes that Musetta truly loves Marcello. To be rid of Alcindoro for a bit, Musetta pretends to be suffering from a tight shoe and sends him to the shoemaker to get her shoe mended. Alcindoro leaves, and Musetta and Marcello fall rapturously into each other's arms.
The friends are presented with their bill. However, Schaunard's purse has gone missing and no one else has enough money to pay. The sly Musetta has the entire bill charged to Alcindoro. The sound of a military band is heard, and the friends leave. Alcindoro returns with the repaired shoe seeking Musetta. The waiter hands him the bill and, dumbfounded, Alcindoro sinks into a chair.
Act 3
At the toll gate at the Barrière d'Enfer (late February)
Peddlers pass through the barriers and enter the city. Mimì appears, coughing violently. She tries to find Marcello, who is currently living in a little tavern where he paints signs for the innkeeper. She tells him of her hard life with Rodolfo, who abandoned her the night before, and of Rodolfo's terrible jealousy (O buon Marcello, aiuto!—"Oh, good Marcello, help me!"). Marcello tells her that Rodolfo is asleep inside, and expresses concern about Mimì's cough. Rodolfo wakes up and comes out looking for Marcello. Mimì hides and overhears Rodolfo first telling Marcello that he left Mimì because of her coquettishness, but finally confessing that his jealousy is a sham: he fears she is slowly being consumed by a deadly illness (most likely tuberculosis, known by the catchall name "consumption" in the nineteenth century). Rodolfo, in his poverty, can do little to help Mimì and hopes that his pretended unkindness will inspire her to seek another, wealthier suitor (Marcello, finalmente—"Marcello, finally").
Out of kindness towards Mimì, Marcello tries to silence him, but she has already heard all. Her weeping and coughing reveal her presence, and Rodolfo hurries to her. Musetta's laughter is heard and Marcello goes to find out what has happened. Mimì tells Rodolfo that she is leaving him, and asks that they separate amicably (Mimì: Donde lieta uscì—"From here she happily left"); but their love for one another is too strong for the pair to part. As a compromise, they agree to remain together until the spring, when the world is coming to life again and no one feels truly alone. Meanwhile, Marcello has found Musetta, and the couple quarrel fiercely about Musetta's flirtatiousness: an antithetical counterpoint to the other pair's reconciliation (quartet: Mimì, Rodolfo, Musetta, Marcello: Addio dolce svegliare alla mattina!—"Goodbye, sweet awakening in the morning!").
Act 4
Back in the garret (some months later)
Marcello and Rodolfo are trying to work, though they are primarily talking about their girlfriends, who have left them and found wealthy lovers. Rodolfo has seen Musetta in a fine carriage and Marcello has seen Mimì dressed like a queen. The men both express their nostalgia (duet: O Mimì, tu più non torni—"O Mimì, will you not return?"). Schaunard and Colline arrive with a very frugal dinner and all parody eating a plentiful banquet, dance together and sing, before Schaunard and Colline engage in a mock duel.
Musetta suddenly appears; Mimì, who took up with a wealthy viscount after leaving Rodolfo in the spring, has left her patron. Musetta found her that day in the street, severely weakened by her illness, and Mimì begged Musetta to bring her to Rodolfo. Mimì, haggard and pale, is assisted onto a bed. Briefly, she feels as though she is recovering. Musetta and Marcello leave to sell Musetta's earrings in order to buy medicine, and Colline leaves to pawn his overcoat (Vecchia zimarra—"Old coat"). Schaunard leaves with Colline to give Mimì and Rodolfo some time together. Mimì tells Rodolfo that her love for him is her whole life (aria/duet, Mimì and Rodolfo: Sono andati?—"Have they gone?").
To Mimì's delight, Rodolfo presents her with the pink bonnet he bought her, which he has kept as a souvenir of their love. They remember past happiness and their first meeting—the candles, the lost key. Suddenly, Mimì is overwhelmed by a coughing fit. The others return, with a gift of a muff to warm Mimì's hands and some medicine. Mimì gently thanks Rodolfo for the muff, which she believes is a present from him, reassures him that she is better and falls asleep. Musetta prays. Schaunard discovers that Mimì has died. Rodolfo rushes to the bed, calling Mimì's name in anguish, weeping helplessly as the curtain falls.

A debauched young aristocrat entrusts the running of his country house to Tom, the butler, on whom he depends absolutely. Before long the servant begins to dominate his master, to the alarm of the newly hired German nanny who senses sinister, demonic intent in Tom's control of the house.