Meet the Park Family, the picture of aspirational wealth, and the Kim Family, rich in street smarts but not much else. Be it chance or fate, these two houses are brought together and the Kims sense a golden opportunity. Masterminded by college-aged Ki-woo, the Kim children install themselves as tutor and art therapist to the Parks. Soon, a symbiotic relationship forms between the two families. When a parasitic interloper threatens the Kims’ newfound comfort, a savage, underhanded battle for dominance breaks out.