Hanseong, the commander-in-chief of Earth's monster-hunting squad, was summoned to another world, used as a hunting dog for the Empire, and then abandoned. He died after being struck down by a tormentor, only to awaken to find himself reincarnated as Dale, the son of the Empire's most powerful black magician, Black Duke. "I will destroy the Empire with my own hands." Swords, magic, and necromancy. Dale, using the knowledge and abilities of his past life, has become the genius prodigy of a duke's family. Once the Empire's dog, he now aims for its heart.