Two highwaymen attack the boat and take all the girls hostage. All tied up and immobilized, they're completely helpless when one of the rogues decides to shag one of the young women, still a virgin. Legs tied up, breasts bare and pants down, the maiden gets screwed straight off. No sooner does he finish than the other scoundrel rapes her in turn. In the meantime, the other prisoners take the opportunity to run to a neighbouring island.

Mayu, completely bewitched, sucks princess Demonia's devilish prick and ends up getting cummed all over. Overcome by an irrepressible desire, Mayu spreads her buttocks apart to get fucked doggie-style by her mistress's penis. Quite hooked on sex, Mayu doesn't hesitate to jerk off as soon as she gets back to her place. Kotaro, a shy student in love with Mayu, notices her strange behaviour and decides to unravel this peculiar story.