In a future city shrouded in neon and gloomy rain, Lin Chen, a top memory cleaner, makes a living by erasing the pain of others and paralyzing himself. A seemingly ordinary commission dragged him into a maze of false memories. Client Su Wan claimed to be haunted by the memory of a non-existent man, but when Lin Chen dived into the depths of her consciousness, he saw her dusty past. Every erased memory fragment becomes a clue pointing to a huge conspiracy. He must clear away the fog among the ashes of memory and recover the tampered truth and self.