In the new Arc City of 2077, the rain never stops and the neon lights are brighter than the stars. The memories here can be edited, traded, and deleted.
Ling Su, a promising elite police detective, chose to delete his most painful memory due to an accident three years ago, and became a private "memory submariner" who made a living by sneaking into other people's memory fragments. He numbly wandered between the light, shadow and human nature of the city, until a seemingly ordinary "suicide case" involved him in the whirlpool.
The death of technology giant Elias Vance left behind a broken "memory core" that cannot be interpreted. When Ling Su sneaked into the ruins of memory, he glimpsed a phantom that should not exist - a mysterious woman, and a past that belonged to him and should have been completely forgotten.
Working with him is Ye Xingtong, a memory restorer with a mysterious identity. She can repair damaged memories like weaving works of art, but she keeps secrets about her origins.
From the sky lounge on the roof of the skyscraper to the memory black market in the underground city, every time they get closer to the truth, Ling Su's past becomes clearer and the real world falls apart. When memories can be forged and identities can be reshaped, how do you prove that you are still you?
In the city of eternal night, Ling Su is not only looking for the murderer, but also the only stream of light that can cut through the darkness and prove the existence of "self".
