To celebrate his promotion, a manager (Javier Portales) decides to summon his brother from the field, but as he did not stop making disasters he sends him back. His brother (Jorge Porcel) is not convinced and dazzled by an advertisement decides to set up an investigation office.

Various love and crime stories take place in the context of a theater, between tango singers, musicians and dancers.

A young woman wants to dedicate herself to Spanish music and her father opposes it, but she continues with her project.

A young woman criticized by her family for her dissipated life embarks on a new path.

Friends Alberto and Jorge, who work together in an insurance company and live in the same building, are married to two sisters (Elsa and Alicia). When they go on vacation to Mar del Plata, Alberto and Jorge decide to enjoy their "single life". In addition to this, they have to fulfill a duty entrusted by their boss: to find the revue theater entrepreneur Félix Sagastume, to sign an insurance contract. It is in a canteen where they go to look for him, and there they meet two aspiring vedettes (Zuzú and Bibí), who confuse them with important businessmen and see in them a possibility of achieving fame.

Friends Alberto and Jorge, who work together and live in the same building, are married to two sisters (Ethel and Gogó). Noticing that their sex life becomes boring, they cheat on them with co-workers. This is discovered and they are fired. Then, they get employed in a beauty institute, where they have many women at their disposal. Their wives learn of this mischief, and go to look for them at the institute, generating hilarious situations.

A single man and womanizer who enjoys the nightlife learns that he has a son who is already an adult. In order to gain his affection he decides to change his life. Things get complicated when he needs to return to his past life, this time to save his family from ruin.

The wife of an officer receives a "prize for virtue" from one of her many lovers, causing several misunderstandings.

The sisters reject the daughter their father had out of wedlock until she receives a fortune from her dead mother.