One night in a certain park. Girls with sad faces and heavy makeup frequent the "big brother from the support facility," believing it to be their only safe haven. But behind the scenes, a terrible trap awaits, taking advantage of their trust. "I had a fight with my family and don't have money for a hotel..." "I spent too much on my host and I'm broke..." "I've taken too many sleeping pills..." Every time they confide their weaknesses, he offers them a cup with a gentle smile. "This will calm you down, will it?" The moment they drink it, a hellish aphrodisiac-fueled sex session begins. At first, they try to resist, saying, "No... something's weird..." but their bodies are honest and they tremble and convulse. Ecstatic faces, crossed eyes, drooling, foaming at the mouth, they orgasm wildly until they lose consciousness!