Out of nowhere, Shiroe finds himself in the city of Akihabara, inside the game "Elder Tale". Thirty thousand Japanese players have been locked inside the game! The world on the other side of the screen becomes reality, and amidst the chaos Shiroe finds his old friend Naotsugu. And as they relax at finding one another, they meet the powerful assassin "Akatsuki". Akatsuki has a request to make of Shiroe...

The Apocalypse has locked thirty thousand players inside the game, and no one knows what to do. The larger guilds are taking over Akihabara, and outside the city violent groups are Party Killing other players. A young female member of Marielle's "Crescent Moon Alliance" is trapped in Susukino, far to the north, and needs their help. Shiroe feels somewhat embarrassed, but makes a decision.

Serara, a young female member of the guild "Crescent Moon Alliance", is trapped by mysterious men in the northern city of Susukino and needs help. Shiroe and his friends travel to reach her. Annoyed by the game's tasteless food, they travel northwards, and go inside "the depths of Palm", a crumbling series of old mining tunnels. There they meet creepy monsters...

Shiroe, Naotsugu, and Akatsuki reach the northern city of Susukino, and safely meet Serara. With the help of the mysterious swashbuckler Nyanta, they plot to leave Susukino. But the evil guild Brigantia wants to stop them. The high-level monk Demikas attacks them. Can they overcome the odds?

Shiroe and his group take Serara southwards. On the way, they stop at the house of one of the "People of the Land". The people of the land were originally only characters in the game, with no personalities or unique traits of their own, but as Naotsugu talks to them, something seems odd... The party gradually realizes that the world isn't the same as it was when it was a game.

Shiroe returns to Akihaba and Marielle tells him what the town is like. The initial chaos has subsided, but the larger guilds are in control, and evil guilds are tricking new players and taking advantage of them. Shiroe is angred by this, and tells Naotsugu, Akatsuki, and Nyanta of his plan. And then he tells the Crescent Moon Alliance that he's going to clean up the city of Akihabara.

Nyanta told Shiroe the secret of making real food in this world. With Marielle's help, the Crescent Moon Alliance begins a fast food stand, and their "Crescent Burger" is hugely popular with players who are sick of tasteless food. BUt Shiroe's real goal isn't to sell hamburgers, and with Henrietta he begins to work on the next phase of his plan.

After the success of their Crescent Burger, Marielle and Henrietta meet with the members of the major crafting guilds of Elder Tale: Karashin of Shopping Street 8, Michikata of the Marine Agency ,and Roderic of the Roderic Merchant Association. They use Shiroe's plan to dangle the secret recipe of the Crescent Burger in front of them, and the talented account Henrietta opens negotiations. What she wants is...

To make the city of Akihabara safe, Shiroe calls all the major guild masters to the guild building. His goal is to create a Round Table Conference, which will rule the city. But everyone there wants something different, and his plan is about to go bad. What amazing trick does Shiroe have? Meanwhile, behind the scenes of the conference, the plan to free the younger players from the evil guild Hamelin continues. The strategist SHiroe's quiet battle in Akihabara continues!

The Free Cities of Eastel are the first to notice the founding of the Round Table. They send a messenger to Akihabara and invite Shiroe and Crusty to their conference. What are the nobles planning at their ice-covered palace? Meanwhile, Minori and Touya and the other new playesr are going on a camping trip at the beach to learn to fight. Marielle forgets her role as leader (?) and enjoys the salt air fun.

Shiroe and Akatsuki are invited to the room of the mysterious mage Reagan. Shiroe is shocked at the revelations he offers about the world of Elder Tale.

The second day of the Scales Festival in Akihabara arrives. Akatsuki has gotten closer to Shiroe, and so is very happy all day, and even seems to be enjoying her fights with Naotsugu. Meanwhile, Minori is uncertain with how to deal with her feelings towards him, and goes to speed to Karashin. Karashin is overloaded with paperwork so she decides to help. It seems like a lot of land people merchants have come to Akihabara...

Akihabara is amazingly busy since the Scales Festival began. There are many land people in town, causing accidents, spreading rumors, and starting couples' fights, and even Shiroe can't deal with them. An influential noble named Marves arrives from Minami to see Laynessia. Laynessia tries her best to deal with him, but he gets closer and closer to her...

Marielle and Henrietta put on a fashion show as the town reels from the Minami decoy operation. Akatsuki walks down the runway in her colorful clothes, but Shiroe is nowhere to be seen. That night, Shiroe is met by a beautiful and enchanting "queen of darkness." Shiroe is tempted he reaches the heart of the conspiracy...

It's been six months since Shiroe and the other adventurers have been trapped in "Elder Tale". As Akihabara moves into late fall, the city is excited for the cultural fair. But Shiroe is ignoring the fun and speaking in secret to a land person, Kinjou, who controls the world's currency flows. When negotiations are over he tells his friend's leaving the city. The long-awaited second series of "Log Horizon" begins a new adventure!