The drama is about the misunderstanding and understanding between strangers who are like family and family who are like strangers. As they grow older, the time spent with parents and children decreases, but the secrets increase. In this realistic background, they live their own lives and meet people who know their secrets better than their family members. They don't know me well but they are relatives, and they are not my relatives but know everything about me. It describes the story of people and family. It is directed by Kwon Young-il, the deputy director of "Please Enter Keywords" and "Suits", and written by Kim Eun-jung, the screenwriter of "Flower Boy Next Door".