JaeSuk and SukJin became enemies since elementary school, their hatred continued the present days. They even teach their children to hate each other since young age that they would get into a fight everytime. Both JaeSuk and SukJin got married later in life; JaeSuk has 2 sons: Gary and Haha; SukJin has a daughter and a son: Jihyo and KwangSoo. The main characters: Gary and Jihyo. Through some incidents that their relationship start to change. How is their relationship will develop? How will happen between the two family? Is there anything like your expectation?