Nightclub entertainer Violet La Tour collapses during a performance in Sagebrush, Texas, and is taken to the ranch of Lon Dixon. They fall in love and are married. Feeling deserted when Lon joins a posse in search of rustlers, she returns to New York. There, she is wooed by her agent, Maurice Kane, but confirms her love for Lon when he comes to claim her.

Jane finds a note one day from the unknown "Master of Games," daring her to complete increasingly more drastic challenges for money as she gets drawn further into his perverse and manipulative game.