All unemployed, Ki-taek's family takes peculiar interest in the wealthy and glamorous Parks for their livelihood until they get entangled in an unexpected incident.
Jobless, penniless, and, above all, hopeless, the unmotivated patriarch, Ki-taek, and his equally unambitious family--his supportive wife, Chung-sook; his cynical twentysomething daughter, Ki-jung, and his college-age son, Ki-woo--occupy themselves by working for peanuts in their squalid basement-level apartment. Then, by sheer luck, a lucrative business proposition will pave the way for an insidiously subtle scheme, as Ki-woo summons up the courage to pose as an English tutor for the teenage daughter of the affluent Park family. Now, the stage seems set for an unceasing winner-take-all class war. How does one get rid of a parasite?