This musical comedy tells the story of two men whose friendship (whose beginning is told in "A toda máquina") is affected by assumptions love triangles and misunderstandings between the two, however, the value of that friendship overcomes all difficulties.

Attracted by Armando, Rosa, comes to him in love. Armando travels to Paris and his return contract an advantageous marriage to Margaret. Rosa gets pregnant and is fired from her job. He goes to work as a dancer in a theater, where he acquired fame under the name Alma Rosa. Meanwhile, Armando's marriage is not going well. One night cabaret where acts Alma Rosa and then become lovers.

Cantinflas is a unique barber, who trades with an elderly neighbor, a lawyer by profession, laws lessons in exchange for haircuts and shaved. It proposes advice to defend in court the disadvantaged neighborhood. His success deputy seeks the votes as the other candidate, Don Próculo, it is not accepted by anyone but his own bodyguards. Don Próculo will use know how much ruse to win the election by the Council, and also for the love of 'Sarita'

A woman, after committing a murder, flees into a church, confessing her life story to a priest.

Young women in the steno-pool have to balance work, romance, and touchy-feely bosses.

Auto mechanic invents a new-improved carburetor; industrial spies steal his invention, romance with a manufacturer's daughter, and he drives a cross-country race.