On one side you have the Kim’s, an unemployed family living in a semi-basement apartment. They struggle to get by and fold pizza boxes to make a little money for food. Then you have the Park’s, a wealthy family that lives in a lavish home without a financial care in the world. When the family son Ki-Woo Kim gets a job as a tutor for the Park’s daughter he see’s an opportunity. One that will bring the Kim family some money, but also one that will entangle them in a much grimmer situation that will change both families forever.