[Madonna 20th Anniversary!! A luxurious collaboration hardcore production!!] Nami, Rio, Yuki, and Sumire are in the same situation, with their husbands in huge debts. They hear from a moneylender that there is a chance to wipe out their debts, and so they come to a secluded inn. It turns out to be a gambling lodge where devilish wealthy men gather. Their clothes are forcibly stripped off, and the four spend their time in fear of a man in black in a dimly lit room where their screams cannot be heard. Then, as many devilish wealthy men swarm them, a nightmarish gambling party finally begins...