Ji Soon Young loses her husband, Wang Se Joon, in a tragic accident. She is left alone to take care of their adopted daughter. She meets and falls in love with Han Kyu Jin, who just happens to be the father-in-law to her former sister-in law, Wang Se Bin. Their lives changes when Soon Young marries Kyu Jin and becomes Se Bin's mother-in-law. They have to adjust to their new roles in their family and at the same time try to get along with each other.