Mercedes works as a cabaret performer to pay for her sister's studies. Problems begin when Mercedes and Paco, her exploiter, win a dance contest, but he refuses to share the prize with her.

1948 film by Emilio Fernández

The film features Fernandez himself as a character named Rogellio Torres. The lion's share of the footage, however, is devoted to the romance between Esperanza, granddaughter of a common laborer, and Jose Luis Castro, the firebrand son of a landowner. Joining a revolutionary movements, Castro is disowned by his father, but Esperanza remains loyally by his side. Later on, Castro's father is killed by outlaws; in seeking vengeance, he sacrifices his own life, while Esperanza carries on his revolutionary work with their young son in tow.

Antonio dives for sponges which are sold by his sweetheart Rossana. One day, the escaped prisoner José-Luis appears and is hid by his friend Antonio. Although José-Luis does not want to betray his friend, a love affair with tragic consequences between him and Rossana develops. The Net was one of Mexico's entries at the 1953 Cannes Film Festival.