Joon Hyeok was a musician whose life has hit rock bottom after he had been scammed by people he trusted. He had ended his relationship with his older sister Joon Hee because of it. One day, suddenly, he receives a call from Joon Hee asking him to take care of her son, Min Joon. After 12 years of strife, Joon Hee divorced her physically abusive husband, at the same time ridding herself of her equally nasty mother-in-law. Joon Hee moves into an inexpensive apartment, keeping a low profile lest her former family finds her. The Royal State is a luxury apartment complex that has some noteworthy residents. Hye Ryeong is the much-respected president of the Mothers’ Committee. Committee member Yoo Ra very much admires her. Single father Kyeong Il is a warm and pleasant man who continues to raise his daughter since the passing of his wife.