Based on Ingmar Bergman's Smiles of a Summer's Night and Jean Renoir's Rules of the Game, the story revolves around a weekend party at the home of Andrew Hobbs, a Wall Street broker and eccentric inventor, and his wife Adrian. The guests of honor are Ariel and Leopold, Andrew's cousin and a famed academic. Over the course of the weekend, they are joined by a third couple, a lady-killer doctor and his date, a ditzy nurse. By the end of the weekend, sexual partners are changed.