In the twisted city of Hole, where humans suffer under sorcerer rule, Caiman—a man with a reptilian head and no memory—hunts for the sorcerer who cursed him. With his friend Nikaido, he interrogates sorcerers by forcing their heads into his mouth, hoping for answers from a figure within him. His brutal quest draws the attention of En, a powerful sorcerer with his own dark motives. As Caiman battles En’s assassins, he inches closer to uncovering his forgotten past and the mystery behind his monstrous form.