Miyu Amano, a 20-year-old young wife, quickly falls into a sexless marriage after getting married. Still craving sexual fulfillment and longing for passion, she becomes involved in an affair with a male coworker. Lying to her husband that she's going on a hot spring trip with old college friends, she sets off on a journey that will lead to a messy, uncontrollable situation. Will she forget everything and surrender completely to pleasure? The moment she takes that first step is here and now.