It is a movie about relationships between two distinct and very different couples. Colin (Rupert Everett) and Mary (Natasha Richardson) are a British couple vacationing in Venice for the second time. They are not married, but Mary has two children, who have been left at home with her mother. We are shown glimpses of a tall man dressed in white, who seems to be observing them from afar. Late one night, they become lost as they search for a restaurant. As they wander around, they meet Robert (Christopher Walken), the British-Italian owner of a local bar. He is the very elegant-looking man in all white. Over several bottles of wine, he tells them stories about his sadistic father who was an Italian diplomat. Robert also talks of the cruel tricks his younger sisters played upon him.