Doctor Honami, recently transferred to a new hospital, hears strange noises coming from the operating room late one night. The sounds are a mix of nurse Naomi Wakatuki's intense moans and lewd, obscene noises. What she witnesses shocks her—Wakatuki deepthroating a penis, taking it all the way into her throat. Overcome by primal instinct rather than reason, Honami is seized by violent, destructive desire and forcefully thrusts her own penis into Wakatuki's mouth. Overwhelmed by this intense pleasure, Honami's masochistic nature surfaces, and she becomes consumed by forbidden ecstasy.