We met a lovely smiling married woman, Kyoko Kubo, on the beach in Kamakura. She is a mother of two, a third-year university student and a first-year elementary school student. Recently, her eldest son has started hinting at marrying her, and the thought of "maybe having a grandchild" has driven her to decide to appear in the film. At first, she was shy, but her smile disappeared as she began to indulge in passionate sex for the first time in seven years, and she became obsessed with the pleasure...