Finally, Eugeo fulfilled his childhood dream and was reunited with Alice. But there was nothing left in her anymore from that little girl from the village of Rulid. Alice came for Kirito and Eugeo as criminals who violated the Code of Prohibitions. She remembers nothing of her childhood and calls herself an integrity knight. They are thrown into the dungeon of the Central Cathedral, a symbol of the power of the Axiom Church, but thanks to Kirito's ingenuity they manage to escape. They are then helped by a mysterious girl named Cardinal, who knows that Kirito came to this world “from outside.” Finally, Kirito and Eugeo set out on a journey to the top of the tower to bring back the old Alice! But strong warriors, born through a ritual of synthesis, stand in their way...