A repulsive hunchback named James Wilton changes his relationship with women when he discovers a diamond mine in Java. A young woman named Gina, on the rebound from an earlier relationship, begins dating him. Later when she decides to break up with him and go back to her former lover, the hunchback manages to taint her with a poisonous substance that will kill anyone who kisses her. After two of her paramours die before her eyes, she finally catches on that he had contaminated her, and she decides to get revenge by luring the hunchback into kissing her himself.