Hilarity ensues when a falsely accused fugitive from justice hides at the house of his childhood friend, which she has recently rented to a high-principled law teacher.

Arthur Ferguson Jones (Edward G. Robinson) and Wilhelmina Clark (Jean Arthur) work at the same accounting firm. Jones turns out to look exactly like the notorious bank robber "Killer" Mannion (also Robinson) and is apprehended by the police.
After his true identity is confirmed, the district attorney gives Jones a letter identifying him, so that he can avoid the same trouble in future. Jones becomes a local celebrity and, at the behest of his boss (Wallace Ford), begins ghost-writing Mannion's "autobiography", with good-natured but street-wise Wilhelmina voluntarily acting as his "talent agent" to see that he gets paid.
Mannion decides to take advantage of his mild-mannered doppelgänger and, ultimately, leaving Jones "holding the bag" for Mannion's crimes. He kidnaps Wilhelmina, Jones' visiting aunt, and a few others, and takes them back to his hideout. He instructs Jones to make a large deposit for Mannion's mother's benefit at the First National Bank, where police detectives are expecting Mannion to make another robbery attempt. Fortunately for Jones, he forgets to bring the check and unwittingly leads the police back to Mannion's hideout.
Upon his arrival, Jones is mistaken for Mannion by the waiting henchmen and quickly realizes that he is meant to be the fall guy. When Mannion returns unexpectedly, Jones orders the men to shoot Mannion. The police arrive in time to capture the rest of the gang. With Mannion dead, Jones collects a reward and takes a long-desired cruise to Shanghai with Wilhelmina.

With the end of the North American Civil War, the manufacturers of repeating rifles find a profitable means of making money selling the weapons to the North American Indians, using the front man John Lattimer to sell the rifles to the Cheyenne. While traveling in a stagecoach with Calamity Jane and William "Buffalo Bill" Cody and his young wife Louisa Cody that want to settle down in Hays City managing a hotel, Wild Bill Hickok finds the guide Breezy wounded by arrows and telling that the Indians are attacking a fort using repeating rifles. Hickok meets Gen. George A. Custer that assigns Buffalo Bill to guide a troop with ammunition to help the fort. Meanwhile the Cheyenne kidnap Calamity Jane, forcing Hickok to expose himself to rescue her.

To fully appreciate The More the Merrier, it is important to know that, during WW2, there was an acute housing shortage in Washington DC. This is why elderly Benjamin Dingle (Charles Coburn) is obliged to share a tiny DC apartment with pretty Connie Milligan (Jean Arthur) and handsome Joe Carter (Joel McCrea). After nearly two reels of misunderstandings, the trio becomes accustomed to their curious living arrangement. Joe takes a platonic liking to Connie, but she's engaged to stuffy bureaucrat Charles J. Pendergast (Richard Gaines). Sizing up the situation, foxy Benjamin contrives to bring Connie and Joe together, in spite of themselves. Things get dicey when Joe endeavors to complete a top-secret mission for the Air Force, which leads to all sorts of comic complications and misguided remonstrations. Throughout the film, director George Stevens and the four-man screenwriting staff deliberately tweak the noses of the Hays Office, getting by with any number of censorable offenses by deftly and tastefully sidestepping the obvious. Especially potent is the scene in which Joe tries to seduce Connie by talking about everything except seduction: it's also fun to watch Dingle robustly repeat the word "Damn" over and over, getting away with this breach of censorship because he's quoting Admiral "Damn the Torpedoes" Farragut. An Academy Award went to Charles Coburn, while nominations were bestowed upon Jean Arthur, Joel McCrea, George Stevens, the screenwriters, and the film itself. The More the Merrier was remade in 1966 as Walk Don't Run, with Cary Grant, Jim Hutton and Samantha Eggar.

Phoebe Titus is a tough, swaggering pioneer woman, but her ways become decidedly more feminine when she falls for California bound Peter Muncie. But Peter won't be distracted from his journey and Phoebe is left alone and plenty busy with villains Jefferson Carteret and Lazarus Ward plotting at every turn to destroy her freighting company. She has not seen the last of Peter, however.

J.B. Ball, a rich financier, gets fed up with his free-spending family. He takes his wife's just-bought (very expensive) sable coat and throws it out the window, it lands on poor hard-working girl Mary Smith. But it isn't so easy to just give away something so valuable, as he soon learns.

1939 film by Howard Hawks

Longfellow Deeds lives in a small town, leading a small town kind of life. When a relative dies and leaves Deeds a fortune, Longfellow moves to the big city where he becomes an instant target for everyone. Deeds outwits them all until Babe Bennett comes along. When small-town boy meets big-city girl anything can, and does, happen.

1953 film directed by George Stevens

In occupied Berlin, a US Army Captain is torn between an ex-Nazi cafe singer and the US Congresswoman investigating her.

Alice, the only relatively normal member of the eccentric Sycamore family, falls in love with Tony Kirby, but his wealthy banker father and snobbish mother strongly disapprove of the match. When the Kirbys are invited to dinner to become better acquainted with their future in-laws, things don't turn out the way Alice had hoped.

Naive and idealistic Jefferson Smith, leader of the Boy Rangers, is appointed to the United States Senate by the puppet governor of his state. He soon discovers, upon going to Washington, many shortcomings of the political process as his earnest goal of a national boys' camp leads to a conflict with the state political boss.

Struggling stockbroker Jimmie Shannon learns that, if he gets married by 7 p.m. on his 27th birthday -- which is today -- he'll inherit $7 million from an eccentric relative.