Chaw is the name for a man-eating wild boar with a body length of 2m and approximate weight of 410kg. Sameri is a quiet village on the foot of Mt. Jiri in South Korea where no incidents have occurred in 10 years. One day a mangled human wrist is found and the village of Sameri is placed in fear and severe anxiety. Shortly later another body part is found and then footprints are discovered with bloodstains. Former hunter Cheon Il Man (Jang Hang Seon) lost his granddaughter and he now suspects her disappearance is tied to the man eating boar. Il Man then gathers some residents to find the boar including Kim Sun Kyeong (Eom Tae Woong), professional animal hunter Baek (Yun Je Mun), and Shin Hyeong Sa (Park Hyeok Kwon). Animal ecosystem researcher Su Ryeon (Jeong Yu Mi) is also enlisted in their hunt.