This classic comedy opens as a group of the guys assembled for cards in the apartment of divorced Oscar Madison. And if the mess is any indication, it's no wonder that his wife left him. Late to arrive is Felix Unger who has just been separated from his wife. Since he is very fastidious and none too tense, they fear he might commit suicide and go about locking all the windows. As the action unfolds, the clean-freak and the slob ultimately decide to room together with hilarious results