The cannibalistic tendencies of Jonghyun, a mental patient of the fourth floor of Busan Hospital and Clinic collide with his newfound love found in his cell mate, Minki, after they are kidnapped by the top most wanted serial killer in Korea. Will Jonghyun find himself to be strong enough to keep Minki safe while facing himself and the danger imposed on them?

Poster and background credit to Prim Graphics. Trailer credit to myself.