The snooty Fernanda decides to leave Spain to visit her uncle in San Francisco in order to escape the attentions of the dandy, amorous Don Diego, but he follows her. She is rescued from a wild taxi ride by a passerby who owns a huge plumbing company. Believing him to be a common plumber, she snubs him, but he pursues her and a romantic rivalry is born.

"She tried to lock her heart -but he was a dangerous love burglar!"