Castiel kills a man under the influence of unknown force, after which he runs away and tries to hide from justice in the forest, but gets into new troubles - he becomes a necromancer not of his own free will. At the same time, it turns out that the emperor, guilty of the death of his parents, ordered the capture of the newly-minted necromancer. In part, the monarch's desire comes in handy - you need to get even with him. There is nothing to lose. Cas can only know the sweetness of revenge by following the paths of a difficult path, and also understand who and why bestowed abilities that he still knows little about.