While still a child, Pirshad Kaiser faces the most terrible enemy, who kills his entire family in cold blood. At this moment, the young man plunges into a pool of darkness and hatred, and his soul awakens, revealing amazing abilities in the hero. It is then that the young hero finds the goal of his whole life. The young man decides that he will do everything possible in order to take revenge on the offender and exterminate his entire damned family. And with them all the terrible monsters that inhabited the "World of Souls." At the age of eighteen, he is found by one of the strongest monsters in the history of fighters and invites our hero, having passed the most difficult selection, to join the ranks of the knights of extermination.