Mi Joo, despite her ordinary girl-next-door appeal, is a woman carrying a painful past; she was beaten by her husband constantly until she lost the will to resist, but when an opportunity miraculously offered itself, she ended up killing her husband. After spending time in prison, she moved away to start a new life and met the bachelor Byung Hoon, a hopeless insurance agent. When he begins to fall in love with her, he finds himself drawn into her dangerous secrets. The mystery surrounding the romance between Byung Hoon and the woman next door, Mi Joo, is solved through a replay of events from past to present.
