The story unfolds in the seemingly serene village of Sameri, where a series of mysterious disappearances and brutal animal attacks start to unsettle the community. The local authorities find themselves at a loss, and panic spreads among the villagers. Detective Kim Kang-su, recently transferred from Seoul, is drawn into the investigation while grappling with his own personal struggles. As he delves deeper into the mystery, he teams up with Chun Il-man, a seasoned hunter mourning the loss of his granddaughter to what is presumed to be a wild animal attack. Together, they seek the expertise of Dr. Su Ryeon, a renowned biologist, who confirms their worst fears: a giant, man-eating wild boar is on the loose.

Determined to protect the village, the trio joins forces with a motley crew of secondary characters, including a brave farmer and a quirky yet knowledgeable wildlife photographer. Their quest to locate and eliminate the rampaging beast becomes a dangerous game of cat and mouse, revealing the boar’s surprising intelligence and ferocity. The tension escalates as the group's elaborate traps and strategies are thwarted by the cunning predator. As the stakes rise and the body count increases, personal bravery and strategic cunning are pushed to their limits in a high-stakes battle between humans and nature.