A down-on-its-luck American carnival travels to Germany in search of success. Beautiful but poor Willie (Ann Baxter) attends a show and picks the pocket of the carnival's owner, Joe Hammond (Steve Cochran). He catches her and seems to take pity. Hammond gives her a job as a dishwasher, only to use his control over her to fulfill his own sexual desires. When Willie meets daredevil high-diver Frank Colloni (Lyle Bettger), it is love at first sight. Collini trains Willie to be his trapeze partner, and soon she becomes the star of the show. Their budding romance is doomed when jealousy, lies and greed turn their love story into a tale of mystery... and murder.