Kang Eun Su has never dreamed of an extravagant life, simply wishing to be happy with her husband, Park Do Jin, and daughter. However, after Do Jin is diagnosed with cancer, Eun Su struggles to make ends meet with her part-time job as a supermarket cashier. Her life takes an absurd, dark turn when she accidentally stumbles across millions of dollars' worth of illegal drugs – and decides to sell them instead of reporting them to the police.Eun Su finds an unexpected partner in Lee Gyeong, her daughter's after-school art teacher, who moonlights as a drug dealer in the Gangnam club scene. But as Eun Su and Gyeong find success, the cops begin to notice, including Jang Tae Gu, the head of narcotics investigations, leading to dangerous choices and an uncertain future.(Source: Viki)