I'm looking for a family..." Eun-Yul is living alone in a huge mansion since his father 'abandoned' him after getting remarried to a younger woman... Eun-Yul, by wanting to experience what it felt to have a real family, invited a group of people with their own stories and problems to live with him and form a harmonious family. What Eun-Yul didn't expect was the temptation he would feel for his new 'sisters'. An uncontrollable desire, a longing for something he can't have! A mysterious cohabitation begins!