Yoon Hye-jin is a housewife trapped in a bad marriage. Her husband, Ha Dong-won, is a wealthy but unfaithful fund manager. And his latest fling is turning into something more.

Deeply involved with Lee Joon-soo's sweetheart Hong Da-ae, Ha is so busy that he doesn't notice his wife.

Yoon, well aware of her husband's affair, decides to commit suicide. She journeys out to Japan to do the fatal deed, only to fall for a young man - Lee Joon-soo himself.