Ayumi married a man twice her age, a divorced father, and built a happy family life. However, her mind was troubled by the future of her stepson, Koudai. He had entered a rebellious phase, dropped out of school, and couldn't hold down a steady job. Feeling the responsibility of a mother, Ayumi took action. But the person she turned to was younger than her husband—youthful and beautiful. This woman kept interfering and lecturing, provoking Ayumi's irritation. In the end, Ayumi's suppressed desires exploded, setting off an intense new drama.