In a future where memories can be deleted, Lin Mo is the top "memory scavenger." He makes a living by erasing the pain of others, until he encounters a "living" memory - a strange existence that parasitizes in the minds of his clients. This is not just a past event, but a secret that can subvert reality. When there is only a thin line between elimination and being swallowed up, he is forced to face the ultimate torture of "self" in the abyss of forgetfulness.