He's a successful businessman who has a wife who is a successful lawyer. They once had a daughter who died and made them always argue and doesn't show any affection anymore, so he cheated on her. Begging is useless so she signed the divorce papers and left for good. Unfortunately, she got into a car crash and lost her memories. After 4 years they met again, she's in a relationship with the brother of his mistress. He wants her back, but she doesn't even know her own and real identity.