Burning

Jong-su bumps into a girl who used to live in the same neighborhood, who asks him to look after her cat while she's on a trip to Africa. When back, she introduces Ben, a mysterious guy she met there, who confesses his secret hobby.

Burning is a 2018 drama mystery movie directed by Lee Chang-dong, starring Kim Soo-Kyung, Yoo Ah-in, Steven Yeun. It holds an IMDb rating of 7.4/10 from 86,197 votes and runs 2h 28m.