It depicts the story of an ordinary housewife, Kang Eun Su, who turns to crime by selling drugs worth hundreds of billions of won that she accidentally finds while struggling to pay for her terminally ill husband's medical expenses. Lee Kyung is an art instructor who teaches after-school classes at the middle school that Kang Eun Su's daughter attends. He is a rare young man in this day and age who is perfect in every way, including his face, personality, and wealth, but at night, he is a drug dealer who provides drugs to children from prestigious families at a famous club in Gangnam. He becomes a drug dealer and partners with Kang Eun Su as they experience an unexpected incident together.