Five years ago, after her fiancé vanishes, In-ji has a fateful meeting. In the present, she learns more about her new husband and his ex-wife.

Jeong-won slowly warms up to his new wife. Sensing a change, Lee Seo-yeon tries to make her ex crack. Meanwhile, someone from In-ji's past resurfaces.

As In-ji creates a homey life and instills peace around Jeong-won, he grapples with his growing desire for her. Seo-yeon can't handle losing control.