When Lee Mi-jin’s husband runs out in the middle of the night, he leaves her and their daughter with nothing but a mountain of debt. Debt, seizure notices, and a single promise: “contact my university sunbae, Kang Sungho. He’ll take you both in.” Sungho is a man of his word, and soon the mother and daughter duo have a roof over their heads and a place to work. But the thing is, Sungho and Mi-jin have a history, and Sungho wants to revisit their past… His son, meanwhile, has set his sights on both women. One things for certain, it’s going to be an experience neither will forget. Because after all, what are friends for?