In the future urban "Floating City" where memories can be extracted, traded and erased, Lin Mo, a top memory mediator, makes a living by repairing other people's broken memories, but he cannot find his own lost childhood. One day, the mysterious woman Su Wan brought a strange commission: a "ghost memory" that did not belong to her, but repeatedly burned her dreams - a burning lighthouse, a desperate child's cry. In the process of exploring the source of this memory, Lin Mo accidentally came across a taboo that had been forgotten by the city, and gradually uncovered a shocking conspiracy related to his life experience. In this forgotten sea of data, he must find the island called truth.
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