Parasite (Korean: 기생충; RR: Gisaengchung) is a 2019 South Korean black comedy thriller film directed by Bong Joon-ho, who also co-wrote the screenplay with Han Jin-won. It stars Song Kang-ho, Lee Sun-kyun, Cho Yeo-jeong, Choi Woo- shik, Park So-dam, Jang Hye-jin, and Lee Jung-eun, and follows the members of a poor family who scheme to become employed by a wealthy family and infiltrate their household by posing as unrelated, highly qualified individuals.

References:
https://en.wikipedia.org/wiki/Parasite_(2019_film)