Mexican screen legend Pedro Infante takes the lead for this high-concept Spanish-language comedy that finds a well-to-do woman forced marry a gruff mechanic, and then pass off the lowly grease-monkey as a blueblood nobleman. En route to her parents vacation house ring in the New Year, a beautiful young woman (Silvia Pinal) hits a roadblock when her car suddenly dies. Though a local mechanic (Infante) is more than willing to help her get back on the road, the pair soon have too much to drink and end up passing out. When the woman's parents arrive and discover the pair together, a marriage is soon arranged with the intent of a quick divorce. This is no marriage of convenience, however, because in the next few days this grease-stained auto repairman will have to assume the guise of a European nobleman as his new bride's family struggles to find a means of rupturing their daughter's recently officiated nuptials.