Recent graduate Dr. Steve Livingston, a new arrival into a prominent Chicago psychotherapist firm, has undertaken a new patient named Tommy who has a troubled past. The new doctor is determined to understand and evaluate the patient's unpredictable and violent behavior. But throughout his examination, the doctor is experiencing problems of his own at home. Although recently engaged to his beautiful fiancée Lydia, Steve still has his own sexual tendencies towards women who appear unexpectedly in his life. Meanwhile, the patient's condition is getting worse - much more so than the doctor realizes. And a dangerous game is about to begin.