While his parents slave away in an animal food factory in the Guro district of Seoul (once the cradle of the Korean economic wonder), Shon Sun, a half-blood, starts his military service in the army. There, Sun does not fare much better - he is raped in his sleep by a superior and finds out he has been infected with HIV. Desperate, he takes revenge and flees the army.
In Seoul, it becomes apparent that his father has disappeared. Sun goes looking for him and finds him in his birthplace, on a polluted tropical beach.
Roh received a different education from many of his compatriots: after working as a stockbroker, he studied experimental film at the San Francisco Art Institute. His work, which has been seen at the festivals of Locarno, Busan, Berlin and Rotterdam, is also different. For Black Stone, the last part of a trilogy about environmental pollution, his main sources of inspiration were Robert Bresson and Apichatpong Weerasethakul. A pitch-black and pessimistic social fairytale with a cathartic experimental ending.