Bobby Murray is the middleweight champion, managed by his father, Tom. He is expected to lose an upcoming fight in defense of his title. A local sportswriter, Sid Durham, also thinks he will lose, but he has high regard for Tom. A gangster, John Zelli, also feels that Murray will lose, but wants to ensure that fact. Zelli enlists the talents of sultry Paula Vernoff to seduce Bobby, and get him to agree to throw the fight.