The worker group Foresight is teleported to the fighting arena in the sixth floor to challenge the great Ains Ooal Gown. Ains tries to restrain his smoldering fury as he disposes the last of the filthy thieves that dare trample into his treasured Nazarick.

Momonga and Narberal begin their respective battles against Clementine and Khajit. Momonga takes this chance to learn about the mechanics of fighting in this world, but in the end, he must show Clementine the consequences of offending him.

To gain more information, Ains and Albedo use themselves as bait as they approach the royal capital. Azuth comes to defend the capital and quickly separates the two. While the two of them exchange blows in the air, a mysterious figure comes to visit Ains

Demiurge takes charge of Nazarick’s forces, laying out the mission to strike at Eight Fingers. Meanwhile, Lakyus details a similar mission to her squad captains. Sebas, Climb, and Brain raid Six Arms’ compound together.

Though Shalltear’s skill set puts Momonga at a complete disadvantage, he steps forward into battle. He gave various world items to his guardians to ensure the safety of Nazarick in his absence. Now, all that is left is a battle of life and death!

Ainz sends Aura and Mare to the Empire with a message. Come and apologize or watch as your country burn to the ground. With no other option, Emperor Jircniv heads toward Nazarick with the head of a noble in tow. Though, things are not as they seem.

The war is finally starting. The Empire plans to use this chance to see the depths of the Sorcerer King’s strength and the Kingdom is confident that they have fully prepared themselves for this war. Gazef stands ready. Now, let the despair begin.

Ains and his army marches towards the royal capital to finally annihilate the Re-Estize Kingdom. Various forces prepare themselves for the coming onslaught. Before the last battle, Zanac rides alone to meet with Ains for a peaceful discussion.

Everyone in the Re-Estize Kingdom makes their final preparations as the Sorcerer Kingdom's army invades the royal capital. Some try to escape and some just wait to die. But there are a few among them who wish to fight until the very end.

Princess Renner decides to stay with her father and struggle against the Sorcerer King until the very end. Climb follows the orders of the princess and sneaks out of the royal palace only to be surprised at what he greets him when he returns.

Momonga finds that the attackers of Carne Village were Slane Theocracy soldiers dressed as people from the Baharuth Empire. As the attack to lure and eliminate Gazef Stronoff continues, Momonga takes this chance to continue his tests…

Momonga reminds Shalltear that he is the master of Nazarick and that his name carries the weight of all the supreme beings of Ains Ooal Gown. After the battle comes to a close, Momonga quickly takes action to strengthen the defenses of Nazarick.

Evileye petitions Momon to help her, and he begins fighting the disguised Demiurge. As Climb and the others try to get Tuare out of the compound, they face resistance. Renner convenes an emergency strategy meeting.

The guardsmen and adventurers face a daunting array of demons until Momon arrives and takes charge. Brain once again comes face to face with Shalltear. While Evileye is occupied, Demiurge reveals his plan to Ains.

The foolish workers that have entered the Tomb of Nazarick greatly anger Ains Ooal Gown. Albedo and the others have already finished preparations for their welcome and Lord Ains watches on, determined that not a single one leaves his tomb alive.

Carne Village is in a pinch once again. An army led by the first prince of Re-Estize has appeared, demanding to be let in so the villagers can be questioned about Ains Ooal Gown. Enri must make a decision for the village and its people.

Gazef challenges Ains to a duel that is impossible to win and Ains decides to accept. The battle will soon come to an end and the fate of E-Rantel will be decided. Even amongst the bloodshed, Gazef and Ains both hold the other in deep respect.

While Albedo and the others make their moves toward world domination, Ains has his own little plan. He wants to cultivate true adventurers to explore the unknown, like the players in Yggdrasil. His recruitment efforts bring him to the Baharuth Empire...

At the outpost in the Tob Forest, Ains strategizes with his guardians, and imposes Shalltear’s penance upon her. The Lizard Man chiefs assemble and receive Cocytus on the battlefield for their final showdown.

The Clan Lord discovers that Ains and his group are approaching the royal capital and asks the frost dragons for help. The Dragon Lord sends his son to intercept the party, while Ains decides to split up the group to confront the Quagoa and frost dragons.

After Momonga registers Hamusuke with the guild, he goes to Nphirea’s home to find that his client has been kidnapped. The zombified remains of the Swords of Darkness litter the storage room. And there, Momonga finds the tortured body of Ninya.

The Sorcerer Kingdom declares war against the Re-Estize Kingdom and gives them exactly one month to prepare. Ains plans to show the world what happens to the enemies of Ains Ooal Gown. However, a few in Nazarick consider this massacre excessive.

Momonga continues his efforts to protect Nazarick from the unknown forces he may be up against in this world. As he manipulates the Mirror of Remote Viewing, he notices a village being attacked and decides to test his strength against humans.

Ains decides to lend a hand to the dwarves fighting against the Quagoa, but not for free. He wants to gather Gondo and the other runesmiths for the Sorcerer Kingdom. At the same time, Ains happens to find the perfect chance to teach Shalltear a thing or two.

The alliance of the Lizard men win the battle and defeat the army of undead. The defeat guardian Cocytus and the new ability to learn from their mistakes, prove that the guardians can adapt to new situations. Ainz Ooal Gown therefore changes his tactics, ordering Cocytus to bring the Lizard men to their knees and under the rule of the Great Tomb of Nazarick.