In the "Fantasy Capital" shrouded in neon and rain, Ling Chen, a top memory cleaner, makes a living by erasing the pain of others. He is calm and efficient, but has a blank memory of his own past. Ling Chen's peaceful life was completely shattered when Meng Li, a mysterious woman wearing a veil, brought a difficult task - to delete a memory fragment that resisted all technologies. After diving into the violent sea of memory, he not only discovered a secret that could subvert the entire fantasy capital, but he was also shocked to realize that the key to this memory was closely connected to his own forgotten past. He must make the final choice between finding himself and sinking completely.