Takumi Kijima is an art student who has closed his heart off after having lost both parents. One day, a witch appears before him and bestows upon Takumi an Ork Stone, an object that grants its user the power to see the future. In one vision, Takumi sees his childhood friend Nozomi Shirai being killed by a mysterious red creature named Gowm. To prevent such a future from happening, Takumi transforms into Ork in order to fight Gowm and protect Nozomi.
In the middle of the night in an apartment, the magic stone "Koku-ishi", which was lying in the room, wakes up the frog monster, Ork. Bewildered by the memory of a young man exercising his power and a strange room, a mysterious-looking man wearing sunglasses appears in front of him.
