Mordred's demonic charm power is dangerously out of control, luring nobles to their deaths and draining him. To protect him until he can regain control, his butlers must drive off the besieging nobles' servants. They propose a competition to determine the new chief butler by seeing who can repel more intruders. With Mordred ordered to rest, the butlers unite under their master's command for a mission to suppress the rogue demons, with a strict order to ensure no one is harmed.