Takahiro, now a college student, lost his father and couldn't get along with his stepmother Mai. Mai, who wanted her stepson to call her 'Mom,' tried to bridge the gap between them. However, Takahiro had a much younger girlfriend, Eriko. By chance, Eriko turned out to be Takahiro's biological mother… Driven by jealousy, Mai, in a fit of rage, kidnapped Eriko and even went after Takahiro…
