Mai and her husband have just moved into a new house. When they go to greet their neighbor, they discover that it is an old lover! The man, who still has feelings for Mai, threatens Mai with old sex photos and forces her to have sex when her husband goes to work. Even though she resists, she writhes in agony at the caresses of the man who knows every inch of her body... Furthermore, an old sex buddy appears and they become immersed in lewd games.