After a quarrel with her boyfriend on New Year's Eve, Mane drives her car from Mexico City to Cuernavaca to meet her parents in their country house. The car breaks down in the highway and Mane has to ask for help. Mechanic Cruci arrives and, after testing the car, offers Mane a ride on his motorcycle. Back in Mane's house, she invites him some drinks to celebrate New Year's Eve. They get drunk and, the morning after, Mane's parents arrive and find them sleeping together. Not knowing what happened, Mane and Cruci are forced to get married against their will.

A poor man becomes a modern Robin Hood, robbing the rich to give to the poor.

Based on Ladislas Fodor's "Stranger on the Stairs". A loved triangle composed by a cynical entrepreneur, a loan manager, and a seductive secretary will lead to a criminal plot in Cuba.