Shio, who has fallen into a sexless rut with her husband during their honeymoon phase, reaches her limit of sexual frustration. So engrossed in her naughty solo play that she forgets to lock the door, she's caught in a compromising position by her neighbor, SATO, who arrives with souvenirs from his trip. As SATO bursts into her room to check on her well-being, he's met with Shio's ecstatic face, writhing in pleasure. With every jolt of ecstasy, her breasts shake and bounce uncontrollably. SATO, who has secretly harbored feelings for Shio, is overwhelmed by her uncharacteristic lustful behavior.
