Private tutor Mio Kimijima is trying to teach a mischievous student who shows no interest in his studies. Though frustrated by his attitude, she reluctantly continues the lesson, only to find herself caught in an unexpected turn of events. After spiking his drink with an aphrodisiac, the student quickly becomes hypersensitive all over, his rational mind collapsing as raw desire takes over. Crossing the boundary between teacher and student, Mio's own feminine instincts awaken, drawing them into a deeply sensual relationship. During sex, she makes him lick the drug off her body, plunging him further into instinct-driven passion as they engage in intense, unrestrained intercourse. This escalating series of events spirals into a bizarre and seductive affair that far exceeds the limits of a normal student-teacher dynamic.