As spring comes to Akihabara, Shiroe decides to send Minori, Touya, Isuzu, Rundelhaus, and Serara on a quest to get the magic bag, a convenient and critical item for high-level adventurers. The 5 excitedly put together their things and get ready to go on a journey.

The gang sets out towards the redstone mountains to get their magic bags. On the way, they meet a party of merchants who are being attacked by monsters. They save the merchants but are overwhelmed, when a girl who looks just like Shiroe saves them.

A massive flock of wyverns suddenly attacks the town of Saphir! The party tries their best to protect the town, but the Odyssey knights are constantly flinging themselves to their deaths. Meanwhile, Roe-2 looks at the brutal combat and doesn't even blink an eye...

Dareila joins the party at the Boxurt mountains, and the group stops at the town of Saphir. Isuzu learns that the reason the land people enjoy her songs so much is because the world only has 42 songs in total. She gets very sad and stays in her room, but then a giant flock of wyverns descend upon the town.

Continuing on their way to the Redstone mountains, the gang encounters a mysterious group: the Odyssey knights, a group of players who'll do anything to get back home. Their eyes are strangely lifeless, and they're carrying a strange altar that allows its users to ressurect immediately.

Operation "Red Night" is canceled and the kids come home to a joyous reunion. They've gotten their magic bags and succeeded in their quest. But a strange man is going around Akihabara asking all the girls to marry him.

At the Round Table Conference gathering, people notice that Rayneshia seems to be preoccupied by something. Meanwhile, on their way back from training, Toya and the others find Ancient sisters.

A Minami plot was behind the massive wyvern attack on Saphir. To stop the plot, Nyanta attacks the train carrying the Minami general alone. But he's faced with the sorcerer he defeated long ago, the man who trapped Serara in the far north, Londark.

Minori finally gets to go shopping alone with Shiroe. While exploring the store, she learns a lot about items and raids. Meanwhile, Shiroe checks in with Isaac to see if he's noticed anything unusual.

The residents of Akiba are notified of the election. Both parties campaign to gain their support. Meanwhile, Rayneshia needs to face her mother to get permission in order to be part of the New Round Table Conference.

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...

Akatsuki revives at the Cathedral and asks the others for help to defeated the murderer. She trains with the top members of D.D.D. and the West Wind Brigade in an attempt to learn the Teachings.

Shiroe receives a letter from his second character on the lunar test server. As the situation in Akihabara deteriorates, it offers him hope.

When Shiroe goes to see Eins to discuss the future of Akiba, he finds the head of the Saiguu Family was also waiting for him. They ask Shiroe to help them with the Akiba Government. The answer Shiroe reaches is…

Princess Rayneshia has resided in Akiba for a while now, getting along with the people in town. One day, she receives a visit from her mother Sarariya and is told that she will be engaged soon to the head of a powerful noble family.

Touri of the Saiguu Family, Princess Rayneshia's husband-to-be, sends a messenger to let her know the preparations are in place for their marriage. Meanwhile, Eins declares that Honesty will secede from the Round Table Conference.

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.

Fall has come to Akihabara. After defeating the monsters, Shiroe is fighting a losing battle against paperwork, but the town is filled with cheer as the first event the Adventurers have ever had, the "Scales Festival", is approaching.

Isaac and the Black Sword Knights are responsible for training the Maihama army. While he's in Maihama Isaac gets to know the new crown prince of Maihama, a young boy named Iselus. Iselus respect looks up to Isaac and respects him. At a party for the crown prince's birthday, assassin's make an attempt on his life.

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.

A full raid of 24 party members has been formed to defeat Nerelith! The maidens gather to defend Akihabara! Meanwhile, Lenessia and Henrietta head beneath the Guild Building for a certain mission...

William, the leader of the combat guild Silver Sword, faces a great crisis as his guild has been defeated and is thinking of going home and quitting. He gives an inspiring speech to rally them into the fight once more.

It's February 14th! Akihabara is filled with excitement as the adventurers enjoy their first Valentine's Day. Marielle and Isuzu try to make cookies out of Kokonia fruits, which are said to make someone fall in love with you. Meanwhile, in the Log Horizon guild house, Tetra puts Akatsuki and Minori up to cooking something for Shiroe.

Krusty has something to tell Shiroe. In his message, he recounts what happened to him after he disappeared, as well as his encounters with Enchantress Youren and the Ancient hero Elias Hackblade.