While the fight against Estarossa hangs in the balance, the team of Merlin, Escanor, Gilthunder, Hendrickson, and Ludoshel prepares for a fierce battle in Camelot against Zeldris and Demon masters Chandler and Cusack. Even though it's three against five, the Assault Force has a fearsome enemy in Meliodas's younger brother. A revelation about another sibling--Ludoshel's fellow Archangel and brother Mael--may turn the tide of the Holy War itself. Meanwhile, the return of Ban from purgatory bodes well for The Sins and their allies, but where is Meliodas?