Movie Story : In the rural village of Gokseong, a mysterious stranger appears on the edge of town, and not long after, residents begin falling victim to a strange and violent sickness. Jong-goo, a bumbling local police officer, becomes entangled in the bizarre cases and grows increasingly obsessed with uncovering the truth. As the bodies pile up and superstition spreads, he races to solve the mystery before the illness claims his young daughter.