In the future urban "Floating City" where memories can be extracted, repaired and traded, Lin Mo, a top memory restorer, lives a lonely life emotionally isolated from others. One day, a mysterious top elite, Su Wan, brought a strange commission: to erase a "phantom memory" that did not belong to her but that repeatedly tortured her. When Lin Mo was exploring the origin of this memory fragment, he was horrified to find that the island of memory echoed his forgotten past. He was forced to dive into the sea of oblivion built of lies and sorrow, not only to repair a memory, but also to retrieve a tampered truth and the lost self.
