The ambitious Hae-Gang and her husband, Jin-Eon have a dysfunctional relationship. They lost their child and Jin-Eon starts an affair with a much younger girl, Seol-Ri. Meanwhile Yong-Gi, the twin sister Hae-Gang never knew existed gets in trouble and Hae-Gang ends up living as her. What does fate have in store for the couple? Are they beyond redemption?