In the remote South Korean village of Hope Harbor, police outpost chief Bum-seok (Hwang Jung-min) and officer Sung-ae (Hoyeon) are called to find a mysterious creature that has wreaked havoc on the village. In the nearby forest, a coterie of local hunters, including Sung-ki (Zo In-sung) set out to track the beast and find themselves hunted instead. But all is not as it seems, and perceptions can be misleading. What begins as ignorance plants the seed of disaster, escalating through human conflict into a tragedy of cosmic proportions.