This book continues the story in Episode 21, telling the story of everyone's adventures in the Unital Ring from the perspectives of Shino and Kirito. While Kirito and his team were forcibly transferred to the Unit Ring, Sinon, who was originally stationed in GGO, also encountered the same mutation. Sinon experienced a series of troubles after being transferred: almost all her equipment and props were lost, she was misunderstood as a PKer, and she encountered a powerful wild boss when her thirst level was about to return to zero... The next day, the group sneaked to Unital again. Ring set out to search for Shino, encountering an ice storm on the way, and then everyone successfully reunited in the cave on the stone wall. Yui showed amazing growth in the battle, but on the way back to the stronghold, another attacker was discovered, and the mystery of the "teacher" who commanded the attackers behind became thicker...
