In a world consumed by chaos, the fates of several nations intertwine as a mysterious enemy emerges from the shadows. Ainz Ooal Gown, the powerful undead king and leader of the adventure guild, has been working to solidify his empire in the realm of Nazarick, but his ambition leads him to cross paths with the Holy Kingdom, a place of fervent faith and magical abilities that could challenge even his vast power.
As Ainz attempts to expand his influence, a faction war breaks out, and the holy knights of the church prepare to confront the threat posed by the undead king. Amid the conflict, an old acquaintance of Ainz appears, bringing with him secrets from the past that could destabilize everything. The characters who camp around him, including loyal allies and new warriors, find themselves caught in political tensions and unexpected betrayals.
With epic battles, explosive strategies, and moral dilemmas that challenge the notion of good and evil, the film delves into the complexity of the bonds between heroes and villains. As the forces of evil seem to gain the upper hand, Ainz must confront his own ethical code and decide whether his quest for power is worth the price he may have to pay. The story unfolds in a whirlwind of action, intrigue, and touching moments that will keep the audience on the edge of their seats.