In Xinhai City, memories are commodities that can be retrieved, stored and traded. The top memory organizer is silent and can easily travel through other people's most private memory corridors, but he only loses his own past. He is like an island floating on a sea of oblivion, accurately describing other people's continents but not knowing his own coordinates.
One day, a mysterious music box involved him in a dusty case. A "ghost memory" that does not belong to any client - a lighthouse, a heavy rain, and a strange name "Jiangyu" - echoed repeatedly in his mind. With the appearance of the mysterious woman "Zero", Shen Shen discovered that his forgotten past was closely connected to the dark core of the city. In order to find himself, he must dive into the most dangerous abyss of memory and face the truth that was deliberately buried.
