Park Seo Jun cameo role in the movie "Parasite" Parasite (2019) summary & plot The plot of Parasite revolves around the Kim family's struggle to survive in a cramped semi-basement apartment in Seoul. Ki-woo, the son, is given a job as an English tutor for the wealthy Park family's daughter, Da-hye. The family's fortunes change when Ki-woo's friend Min-Hyuk gifts them a rock said to bring wealth. Ki-woo and his sister Ki-jung, posing as art therapists, infiltrate the Park family's lives, leading