Hayama, a struggling student who is on the verge of losing his university credits, is assigned to help wacky genius Professor Shiina with an experiment, with a promise that he is exempted from repeating the year by assisting. However, the mysterious drug used in the experiment is a "clutz-inducing" drug that causes a sticky love situation. The days of Hayama, a (presumed) virgin, being subjected to sexual harassment by the professor begin...