Three couples are staying at a lakeside cottage with their children. They want them to prepare intensely for a prestigious high school's entrance exam with the help of a private tutor. One night, one of the wives confesses to her husband that she has killed his mistress.

• Fuji Television Network
• Koji Yakusho
• Hiroko Yakushimaru
• Akira Emoto
• Etsushi Toyokawa
• Shingo Tsurumi
• Kaoru Sugita
• Fukumi Kuroda
• Yūko Mano