The elite hunters of the Wu Shang tribe venture deep into the enigmatic Old Mountain, only to be attacked by a mysterious creature. The sole survivor, "Snake Master," escapes with a horrifying truth—the attackers were monstrous beings with human heads and serpent tails. The mountain has long been shrouded in eerie legends of the "Snake Woman"—could they be real? Snake Master teams up with the mountain keeper, Chen Shu, and a squad of elite mercenaries to return to the mountain. But as their investigation unfolds, a bloody and brutal forbidden truth begins to surface. In this hunt… who is truly the prey?