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.

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.

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

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.

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.

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.

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 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.

Momonga does damage control at the guild while he assesses the reason for Shalltear’s revolt. Coming to the conclusion that she is under an incurable status effect, Momonga goes to the treasury to retrieve some of the powerful weapons of Nazarick.

With the events of Re-Estize Kingdom and the Lizard Men behind them, the loyal servants of Nazarick return to their daily routines. Ains, however, is worried about the work/life balance of his NPCs. They work day in and day out without rest…

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.

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!

While Momonga has some doubts, he accepts Nphirea Balear’s request under the condition that the members of the Swords of Darkness join them. Though her urge to kill keeps distracting her, Clementine continues to slowly find her way to Nphirea.

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.

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.

Enri meets Agu, who tells everyone that the Giant of the East and Demon Snake of the West are gathering forces to fight the master of the Monument of Ruin. Enri and the others take action, but little does she know how crazy the day will become…

Ains decides to go and see the Giant of the East and Demon Snake of the West himself. If they are similar to Hamusuke, they may have some worth as experimental subjects. They may also be useful in testing Lupisregina’s capabilities with the village.

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.

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...

Grateful that they weren’t cast aside, the floor guardians experience the rule of their true master for the first time. Momonga quickly assess the situation and works toward protecting the tomb from invaders while contemplating what he must do.

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 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.