Elizabeth's chance to break the curse is quickly fading as it approaches its destructive end. Ban and Meliodas head to the Demon Realm to confront the Demon King and undo the curse, while Merlin, Escanor, and Archangel Ludociel set their sights on defeating Zeldris, Meliodas' brother. Meanwhile, Elizabeth is held captive by Estarossa, Meliodas' relative, leaving King, Diane, Gowther, and Hawk to launch a rescue mission. In such a precarious situation, timing is of the utmost importance.