To establish her position as the new wife, Takako entered the household as her husband's remarried bride. Determined to reform the troubled behavior of Atsushi, her stepson and the son of her husband and his late wife, she vowed to offer her own body to earn acceptance as a true family member. Her efforts succeeded, and Atsushi gradually came to accept her as a genuine maternal figure. However, one day, Tatsuro discovers their secret relationship—and is utterly shaken to his core.