The attractive, exuberant and beautiful Flor Tetis Soutien de Gambeta (Isabel Sarli), an ostentatious woman who kills men, has just been widowed for the eighth time. All her fortune was fading little by little and she now she is about to be ruined. But suddenly he sees her good luck reappear: A little canillita (newspaper seller), Pepe Mangiabróccoli (Pepe Marrone), with a good heart, who suddenly becomes a millionaire by earning the prode and falls in love with her.
Pepe receives a notebook from his great-uncle containing the formula for making an atomic bomb. When some specialists dedicated to science discover it, they begin to send people to steal it.
