Suffering mother is reunited with her son after a long absence... and he turns out to be a real rotter.

Maria is a young orphan who lives with her wealthy aunt. Maria sings in a cocktail bar with his friends, who form a rock band, and enjoy the night with them. One of his friends, Ernesto, is in love with her, though she does not seem to feel the same about him. In fact, multiple existential doubts and feel a strange emptiness in his life suddenly drive to enter a convent as a novice, breaking Ernestos' heart. However, with her cheerlul character, open and rebellious, not appear to conform to life in the cloister, and especially have problems with the novices director , who often punished for trying to take the right path. In the convent, which also functions as children's hospital, she meets a doctor with which it takes quite right for the contrast between his two characters, but his way with love and mutual respect.

Capulina reaches Mexico City and sweating buckets trying to work with his uncle, the billionaire strict resting all day surrounded by a bunch of beautiful women.