Riri, a famously beautiful teacher, is popular with her students. Her class includes two male students who excel in chemistry. The aphrodisiac she concocts in the classroom is incredibly powerful, filling their minds with desire and leaving their groins hot and throbbing. Though they don't realize it yet, it's a groundbreaking aphrodisiac. A few days after Riri is given the drug for fun, she collapses in the classroom, resulting in an emergency. They rush her to the nurse's office, where, despite her daze, she finds her body hot and her groins wet and rubbing. The students, excited by her behavior, unleash their youthful desires by having sex with Riri. With vague memories of her habitually giving her teachers aphrodisiacs and having sex with them, Riri visits the science clubroom, accidentally sees the aphrodisiac recipe, and calls the students into the classroom. The mistakes made by these future chemists in their student days are an emotional and erotic reflection of their youth.