E-Rantel, the capital of the newly founded Sorcerer Kingdom, is experiencing a severe lack of supplies. Previously a thriving trade hub, the city now confronts a crisis stemming from the populace's caution—or perhaps fear—of their ruler, Ainz Ooal Gown. To rectify the situation, Ainz dispatches Albedo to the city as a diplomatic representative. At the same time, the cardinals of the Slane Theocracy debate how to strike back against Ainz following his assault that devastated the Re-Estize Kingdom's military, scheming to have the Baharuth Empire seize the Sorcerer Kingdom. Yet, when Emperor Jircniv Rune Farlord El Nix schedules a meeting with the Theocracy's envoys in a colosseum, he finds himself face-to-face with Ainz himself. With their clandestine assembly now exposed, the emperor and his visitors discover that Ainz has issued a duel challenge to the Warrior King, the empire's premier combatant. Unable to grasp Ainz's intentions, Jircniv can only observe as the future of humanity shifts before his eyes.