Keiko, who married her husband, the chairman of the school board, in an arranged marriage, works as a teacher at the school where her husband is watching over her. One day, a transfer student, Mutsuo, arrives in Keiko's class. Keiko protects Mutsuo, who is immediately targeted by delinquent students. Mutsuo then hugs Keiko... And when Mutsuo kisses her, Keiko realizes that he is the son of Hanaoka, whom she once loved. A few days later, Keiko is reunited with Hanaoka at a career counseling session. However, when her husband finds out about the reunion, he threatens to expel Mutsuo...