In the "Forgotten City" where neon lights and rain intersect, memories become commodities that can be extracted, traded, or even erased. Lin Mo, the top memory restorer, is a man without a past. He can accurately repair anyone's broken memories, but he can't piece together his own. A mysterious commission breaks his peaceful life: a non-existent "ghost memory" fragment leads to a woman who is both familiar and unfamiliar to him. In order to pursue the truth, Lin Mo stepped into the abyss composed of memories. He will face the huge organization that controls the memory trade, uncover the dark secrets under the city's glory, and finally face the past buried by his own hands that can subvert everything.