Ayumi, who raised her daughter Mika single-handedly, finally felt at ease when Mika got married. 'Now it's my turn to find happiness,' she thought as she tried to start a new life, but ended up breaking up with her boyfriend... Just then, her daughter and son-in-law, who were building a house, decided to stay with her temporarily. Ayumi, feeling disheartened, began to feel something for her son-in-law Eiki, who was always there for her, and started to feel a stirring in her womb. On the other hand, Eiki, drawn to Ayumi's allure, couldn't hold back his surging emotions...
