A gloomy energy suddenly falls over a group of veterinary students who have to go deep into the mountains of Gangwon-do to track a released black bear. The deeper they go into the mountains, the more the black bear tracker hovers around the same spot, and the fear slowly creeps in... A true horror thriller that takes place in the mountains. Real body-freezing horror! Scream, as you're watching the movie! Open your eyes if you want to know the truth!