It's almost Christmas in Akihabara. At Lenessia's mansion, Marie and Henriette are all visiting. Lenessia is smiling, but she can't open herself up to the adventurers because of how different they are. Akatsuki, who has been tasked with guarding the princess, is the only one who isn't having fun. She thinks of Shiroe and worries about her own powerlessness. Then, in Akihabara in December, a shocking event occurs.

Shiroe and his friends have come to the Depths of Palm to reach the Sacrifice Clan's gold. The underground labyrinth is filled with powerful monsters that wear them down in a war of attrition. Meanwhile, Akihabara, Akatsuki hears about the "Teachings". She's very interested to know that by completing a high level raid, she can greatly improve the level of her techniques.

Shiroe, Naotsugu, and Regan head to the northern city of Susukino, which was once run by the evil and violent Briganitia guild. They're looking for high-level adventurer's to help them get the the "Sacrifice Clan's Gold". Shiroe visits an unexpected person. Meanwhile, Naotsugu and Regan walk through the frozen town and find a small but pretty girl named Tetra. She calls herself a "galactic idol", and she's very irritating, but her level is 92...!?

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.

The final boss, Uru of the Ninth Garden vs the villain in glasses, Shiroe is up against what could be the strongest boss in this new world.

With honesty and renewed sense of comradery the team has a small chance of winning an unbeatable raid.

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 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!

Asahi realizes what it is she really wants as the loop comes to an end.

While Light rests after collapsing, Lena and Ayla are called to the adventurer's guild to report to the guild's authorities on the incident with the Wicked Dragon. They attempt to get information on "Black Swan" and Dratena, but the Holy Sister cleverly dodges their questions, so Lena offers the Wicked Dragon's scale in exchange for access to records concerning Dratena.

Oscar agrees to let Princess Nephelli of Yarda take refuge from strife in her homeland. However, they find an assassin has followed her into Farsas.

Officer Yamazaki, the doppelganger police officer of Hyakki Academy Island, tries to protect the peace by capturing a teketeke robber.

Blue Beyond meets with the Inspector who will oversee their clan application, Harold Jenkins, who explains to them that the situation has changed.

With Finocchio as witness, Noel has to face off against the representative of Albert Gaminbo's choosing, who happens to be a familiar face.

After the scuffle, Noel decides to go into action to get his payback on the man who ordered his assassination, Albert Gambino.

Noel is having trouble finding new party members that meet his standards, but things take a dangerous turn when someone comes looking for him instead.

Noel and Alma are back in Etria, and they decided to spend the day doing some much-needed shopping. However, their date runs into a few roadblocks on the way…

Noel and Alma head out on their first job, a request from a poor village chief to deal with a group of thieves giving them problems, but it doesn't go as hoped.

Blue Beyond is reborn, but it won't get anywhere with Noel as its only member. So he puts out a call for new recruits, only to find an unexpected taker.

Noel and Walter must come up with a plan to capture the runaway Lloyd and Tanya, and get their money back.