After moving to a suburban apartment with her husband Koichi, Nozomi discovers that their neighbor is a professional AV actor. Torn between unease and curiosity, she finds herself drawn into a dangerous relationship with him. One day, the neighbor ties her up and forces himself on her. Though she resists at first, she becomes captivated by his expert, professional techniques, getting deeply entangled in the affair. As their encounters grow increasingly intense and depraved, Nozomi is driven into a new, forbidden relationship.