Hae-Gang is a successful lawyer but could not satisfied with her ambition, perhaps it is why her relationship with her husband - Jin-Eon becomes worse. Meanwhile, Jin-Eon meets with Seol-Ri, who is very similar to his wife before. Hae-Gang meets a sudden accident and amnesia and after the accident she becomes the twin sister of Baek Seok and renamed Yong-Gi. One more time, she falls in love with his ex-husband, whether this time she can conquer him to find her happiness or not?