Kanami, a wife who has been working as an international flight attendant for three years and is married to her beloved husband, is living a smooth sailing life. One day, on her day off, Kanami visits a massage parlor recommended by a colleague. Just as she is relaxing with the comfortable oil treatment, the therapist's fingertips attack her from her groin to her anus. Kanami is told that it is a medical procedure and is unable to resist, resulting in her anus being penetrated. Since then, she has not been satisfied with vaginal intercourse with her husband, and her anus is still throbbing, so she visits the massage parlor again...