[A serious teacher falls into a swamp of pleasure from an aphrodisiac!] During summer vacation, a new teacher, Ria, goes with a colleague to scout out the school trip destination. The colleague turns out to be a man with an insanely strong libido, and Ria is targeted by him. He gives her an aphrodisiac while she's eating, and sexually assaults her. After being raped with the aphrodisiac over and over again, including a sweaty piston in the sauna, a blackmailed titjob, and a forced squirting orgasm, the teacher becomes addicted to sex and begins to seek out her sleazy colleague! "Give me more cock!"