He tails a high school girl riding a bicycle and rubs an aphrodisiac on the saddle when he finds an opportunity. The high school girl, unaware of what is going on, thinks he is playing a prank and endures as he straddles the wet saddle. The aphrodisiac seeps through her panties and works directly on her pussy. As she rides, her sensitivity increases and she can't hold back, leaking on the street. As she loses consciousness, he attacks her and the high school girls instinctively go wild.