Minori Kisaragi (Marika Matsumoto) and Yudai Kisaragi (Terunosuke Takezai) pursue a marriage where love comes first.They have one child, and in the eyes of outsiders, they are a very happy family.
Minori felt something was wrong with Yudai's recent behavior and followed Yudai.Yongda lives in harmony with his unfaithful partner Miyake Riko (Noami Mayo) and her son Miyake Wataru (Nomura Kouta).
It's just that divorce can't end, and the extremely happy unethical revenge begins now!