Reiko plays the role of a good wife and has a happy marriage, but behind the scenes she is enjoying an affair with a handsome man. However, the time limit until her husband comes home makes the overly horny Reiko frustrated. "I want to have sex with a young man to my heart's content without worrying about time!" One day, a chance to make this wish come true arrives. Her husband is going on a three-day business trip. Reiko immediately calls the man. 72 hours of indulging in carnal desires to the limit begins in the love nest...