This drama is about a family living in the suburbs of Seoul, held together by the hardworking patriarch and his wife. However, this father has hidden his true identity for thirty-five years, and now all his children have grown up and are about to get married. His wife is a devoted mother to their three daughters and one son, and she loves her husband deeply. Suddenly, one day, a young man shows up at their home and claims to be the family’s son. Even though he knows this young man isn’t his biological son, the father takes him in and insists that he is his real son. Ahn Joong Hee is an actor who was formerly a member of an idol group. One day, he appears before this family, which consists of Byun Han Soo and Na Yeong Shil and their four children: Byun Mi Young (Jung So Min), Byun Hye Young (Lee Yoo Ri), Byun Joon Young (Min Jin Woong), and Byun Ra Yeong (Ryu Hwa Young). Joong Hee begins living with them.