María Mercedes, a poor girl who sells lottery tickets, meets a rich man who hates his own family and sees in María Mercedes an opportunity to make their lives miserable.
Gangster Johnny Carmenta must confront the "Charro of the Slums" Pancho Domínguez, who has control over the city, but their rivalry gets worse when rumba dancer Rosa befriends both men.
Small town girl moves to the big city. When she can't find a job, she starts hanging with a bad crowd.
