A little girl named Rena, had once lived in a peaceful village in the mountains along with her family and friends, until one day, the Ki-Sun, a powerful mythical creature, attacked. The creature had six wings, a lizard-like body, standing on horse-like hind legs with three humanoid heads with its faces resembling fear, despair and emptiness. The creature used its ability to manipulate the bodies of the villagers, twisting their bodies into horrible atrocities. Many of the villagers, including her family were killed, but with the help of her father, Rena and her friends managed to escape in time. Despite their escape, they were still traumatized and will never forget the horrors they witnessed and the memory of the Ki-Sun's massacre stayed with them. However after they left, the Ki-Sun finds out that they have escaped. It suddenly felt agitated, as if he knew something bad would happen. The Ki-Sun, filled with rage and determination, set off to hunt them down.