Hibiki Otsuki is a race queen under an exclusive contract with a certain company. One day, her sponsor leaves her due to poor race results, and the team is on the brink of disbanding. As a last resort, a company executive gives her an aphrodisiac to invigorate the team's slumping motivation...and her elegant and ladylike personality suddenly changes. She seduces the men around her, and in a trance-like state as if possessed, she repeatedly experiences massive incontinence and convulsive orgasms.