Madonna adapts Ryuichi Hoshino's hit humiliation-and-training story about three married women attacked while traveling. Childhood friends Asagi, Yukari, and Mio meet three seemingly refined middle-aged gentlemen on their trip and soon join them for drinks. The men's true nature is far darker: they drug women and rape them repeatedly. After putting the three friends to sleep, they carry them into their room, where the defenseless wives are subjected to merciless restraint, gang rape, and abusive conditioning.