I Have a Lover

The ambitious and successful lawyer Do Hae-gang (Kim Hyun-joo) and her husband, Choi Jin-eon (Ji Jin-hee) have a dysfunctional relationship. They lose their child and Jin-eon starts an affair with a much younger girl, Seol-ri (Park Han-byul). Dokgo Yong-gi is Do Hae-gang's unknown twin sister. After the couple divorce, Hae-gang gets into a mysterious car accident and loses her memory. Baek Seok (Lee Kyu-han), mistaking Hae-gang as Yong-gi, saves Hae-gang and makes her live as Yong-gi. Hae-gang becomes Baek-seok's fiancé and lives with his family. What will happen when Jin-eon and Hae-gang meet again? Will the couple be able to go back to how they used to be before?