Julius orders the Black Bulls to save Nero and Marie, so Captain Yami, Noelle, Finral, Gordon and Gauche travel to a certain town along with the captain of the Silver Eagles Nozel, to see if they can find any clues. They try to ask the townspeople for some clues, but it appears that they are less than willing to cooperate because they seem to hold a grudge against the Magic Knights who weren't able to come to their immediate aid after they were attacked by the elves.

Though the Magic Knights were able to save Marie from the Devil Banishers, Nero is taken once again and Asta's 5-leaf clover grimoire is also stolen. Suddenly, they receive a message from one of Damnatio's subordinates and learn the true identities of the Devil Banishers and Julius orders the Black Bulls yet again to save Nero. The Black Bulls begin their investigation in the town where they think the Devil Banishers were gathering. Will they be able to find out what the enemy's true motive?