After the rises of mysterious towers all over the world, the rises of hunters came to existence to raid the towers. With the power of aretisites, hunters can wield special abilities. A young man name Lyden enter a tower without an aretisite to protect him. He only had one to chance to become a hunter, but the unexpected happens. In the tower, he turned into a powerful monster when he obtains a strange aretisite. Now with his new body, will he be hunted by the hunters and killed or will he become a being that would fight against the human race?