A boy named Lucius is trapped in a distorted house created by the traditional hero. What he finds there's the Demon King and the Dragon King, who ought to have been defeated by the hero 300 years in the past. Lucius befriends the Demon King and the Dragon King, and is educated by them, going from a weak youngster to a legendary warrior with the facility of each demons and dragons.Utilizing his energy, Lucius escaped from the unusual place and was accepted into the magic academy the place the hero’s descendants reside. And now he should face many challenges to free the Demon King and Dragon King.