After being laid off from his temporary job, son Hiro returns to his parents' home. Worried about his lack of energy during their long-overdue reunion, mother Minako invites him to bathe together. In the steamy bathroom, Hiro instinctively buries his face in his mother's large breasts. That night, Hiro receives a call from his senior coworker, Yuu, who has also been fired and has nowhere to live. Minako agrees to let Yuu stay at their house for a while. However, this decision creates a new rift between Hiro and his mother. As household tension rises and emotions become entangled, a new relationship begins to unfold.