Married couple Kim Sung-jae & Yoon Ji-yeong gets divorced. Prior to their divorce, the couple had an argument and their five year old son left the house. Their child died by a car accident. The guilt from their child's death weighted heavily on the parents and eventually they divorced because of this.

As time goes on, the ex spouses meet again as neighbors ...

원수같던 전 남편이 옆집으로 이사오면서 이혼 부부 사이에 일어나는 일들을 그려낸 드라마