34-year-old Anna Shimizu is a housewife living in Kyoto. She married her husband at 22, and this year marks their 12th anniversary together. A mother of a 10-year-old daughter, she is an active, health-conscious woman who loves sports, especially marine activities such as surfing and diving. Her energetic and curious personality leads her to enjoy casual flings when approached by men, even though she's married. Because of her daughter, she's mostly active during the day, but she sometimes cheats with surfers who approach her at beaches like Hachiohama. Despite her promiscuous tendencies, she handles all household and parenting duties single-handedly, leaving her husband with no reason to suspect her. This documentary captures the passionate side of this experienced wife as she chases both thrilling waves and the peak of pleasure while surfing.