A reformed criminal looking to turn over a new leaf finds that even wealth and success aren't enough to turn off his criminal impulses in a classic Mexican comedy starring Pedro Infante and Marga Lopez. Upon realizing the errors of his criminal ways, Pedro (Infante) gets a job as a salesman and attempts to go legit. As luck would have it, Pedro finds great success in his new venture and soon acquires both a beautiful mistress and all the wealth a man could hope for. Problems arise, however, when the thrill of the criminal life simply becomes too powerful to resist and Pedro joins some shady old friends in a dangerous drug robbery. When an innocent man is falsely implicated in the crime, the hoodlum-at-heart soon finds himself torn between his sordid desire to break the law, and his sorrow at seeing the wrongly accused man suffer.