In a world brimming with magic, mystery, and untapped power, Ainz Ooal Gown, an undead overlord from another dimension, finds himself in a new and unfamiliar land. Armed with immense mana reserves and a sharp mind, Ainz seeks to master the rules of this world. Through experimentation and the creation of terrifying demonic ants, his quest for supremacy begins. His most loyal servant, Demiurge, is summoned to assist, bringing his cunning intellect to bear on the challenges ahead. While Ainz plots to build his army, Demiurge is fascinated by the opportunities this world offers—particularly in surpassing the level 100 limit. He eagerly tests the boundaries of summoning demons and perfects a breeding ground for the fearsome demonic ants. Together, they aim to reshape this world into a realm of their own making. Meanwhile, Rimuru Tempest, a slime turned powerful demon lord, forges an unexpected friendship with Ainz. Though their bond grows over time, Rimuru remains wary of Ainz's ambitions, sensing the overlord’s hidden power and calculating nature. As Ainz and Rimuru exchange knowledge and experiences, their paths may converge, but Rimuru cannot help but question whether Ainz’s designs will one day bring chaos to his peaceful kingdom. In the shadows, the legendary Demon Lord Guy Crimson watches with great interest. Known as the strongest demon lord, Guy is intrigued by Ainz’s arrival in the world. Not summoned, but arriving naturally, Ainz piques Guy's curiosity, and he sees potential in the undead ruler. However, Guy is a master of schemes, and he may either prove an ally—or a dangerous rival—in the grand game of power that is about to unfold. As Ainz’s influence grows, so too does the fear among kingdoms and heroes alike. The Demonic Ant King rises in legend, with rumors of his dark power spreading far and wide. Facing foes both ancient and new, Ainz is determined to establish his reign over the land. Will his brilliant strategies and overwhelming magic be enough to crush all opposition? Or will hidden forces, including the watchful Rimuru and the cunning Guy Crimson, stand in his way? One thing is certain—the Supreme Overlord will not rest until this world kneels before Nazarick and its mighty ruler.