Ayako is a married woman living a comfortable life in a luxurious mansion with her husband, who is a department chief at a top-tier company. Her only dissatisfaction stems from the loneliness she feels when her husband is away on overseas business trips. One day, she dreams of being attacked by a masseur she invited to her home while receiving a massage. Still under the spell of that dream, she ends up inviting him over and seducing him, sparking a series of intense and thrilling sexual encounters. Seeking new pleasures beyond her ordinary life, Ayako's choices begin to transform their relationship.