Reika Honma, a married woman with I-cup breasts, has been in a long-term sexless marriage. One day, a massage therapist acquaintance visits their home, offering relaxation therapy. However, the therapist is secretly involved in her husband's scheme—a trap designed to end their sexual drought. Unaware of their true intentions, Reika submits her body to the masseur. Without her knowledge, a secret relationship develops between her husband and the therapist, sparking new emotions. A tense and surreal atmosphere unfolds as the betrayal slowly takes root.