Nelson Hibbert expects to become the new president of Nagel Industries, but Mr. Nagel gives the promotion to another employee. When Nelson barges into Nagel's office to confront him, he finds Nagel's been murdered. Fearing that he will be implicated, Nelson decides to run from the law...despite the fact that the police already know the killer's identity.

Sam Giancana is a ruthless mob boss from Chicago. During a trip to Las Vegas, he sees a performance by the McGuire Sisters, a popular singing group with a pure image. Sam is attracted to Phyllis and begins aggressively courting her. The two enter into an epic romance, but it brings unwanted attention and tarnishes Phyllis's reputation. For Sam, however, the consequences are far more drastic, landing him in trouble with the law and his fellow mobsters.