In the futuristic city "Fantasy Capital" soaked in neon and rain, Lin Chen, a top memory modifier, makes a living by "erasing" the pain of others, but is trapped in his heart by a blank past. When a mysterious woman, Su Wan, comes to the door with a strange request to find a lost melody, Lin Chen is forced to dive into her fragmented memory landscape. However, this dangerous exploration not only awakened the terrifying "phantom" deep in her memory, but also unexpectedly illuminated a forgotten corner of himself. The two are involved in an old conspiracy about the "Chimera Project". They must piece together their complete memories in order to find the isolated island called "Truth" in the ocean of oblivion that swallows everything.
