James (Ian Bonner Ian Bannen) is a banker with a little success in his career. By chance, he meets a woman named Penelope (Natalie Wood Natalie Wood). The charming person of Penelope soon captivates James. Not long after they know each other, they enter the hall of marriage. To Penelope's surprise, James fell in love with another woman not long after his marriage. In the midst of sadness and anger, Penelope decided to give James some color to see. After dressing up, Penelope ransacked James's bank as a robber, and afterwards told her psychiatrist Greg (Dick Shawn) what she had done. However, Greg did not believe what Penelope said, for he had long been deeply in love with this lovely girl.