In the near future where memories can be deleted and traded, Lin Mo is a top "memory scavenger" who makes a living by accurately erasing customers' painful memories. He is an island, calmly sailing in the turbulent sea of other people's memories, convinced that he has no connection with those emotional whirlpools. Until during a routine mission, he saw a face from his own childhood in the broken memory fragments of an old woman. This discovery turns his world upside down. Whose past did he erase? In order to retrieve the truth, Lin Mo had to sneak into the most dangerous restricted area - the forgotten ocean that he had buried by his own hands.
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