Akari and Alice are restrained as sex slaves in a cell beneath a mansion. Their master orders them to explain the rules to newcomer Yumika: erase her debt by earning 100 million points within a month. Taking the master's semen in her pussy earns 3,000 points and having a real orgasm earns 1,000, but faking one resets everything to zero. Three troubled women are forced into a degrading game that turns them into obedient sex slaves.