Benno Deukert, a talented young boxer, gets to know Marie. The two fall in love and dream of a future together.
Eva works as a decoy. Her job is to test husbands for their fidelity. Her good friend Corinna gives her a particularly well-paid assignment. She is to seduce Stefan, the husband of the very wealthy Christiane Reedmann, and lure him into a trap. A short time later, Christiane is killed and all the evidence points to Eva as the murderer. Now Eva herself is caught in the trap.
