Summary: Min-ki (Choi Min-Sik) is an unemployed banker. He now takes over the domestic roles of the house: cooking, cleaning, and watching the baby. In his free time he watches soap operas and reads romance novels. Meanwhile, his wife Bo-ra (Jeon Do-Youn) works at an English language institute and is having an affair with a former lover.
One day, Min-ki accidentally stumbles upon a key, that belongs to his wife, and is unfamiliar ...