In New Arc City, memory is the currency in circulation and the deadliest poison. Ling Su, a memory restorer who wanders around urban subsidence areas, makes a living by repairing other people's broken memories. He is like a soul diver, sinking into the strange sea of consciousness of strangers day after day, salvaging the forgotten truth, and guarding his already incomplete past.
A mysterious commission from the upper area broke his peaceful life - to repair a severely broken memory crystal from the deceased. When Ling Su dived into the chaotic memory data flow, he found that what he had salvaged was not only the secret of a rich girl, but also a terrifying conspiracy that could subvert the entire order of New Arc City.
Tampered evidence, a nonexistent murderer, and a name that echoes repeatedly in the depths of his own memory. In order to survive and to recover the "self" that was taken away, Ling Su must go against the torrent of memory and trace the scars engraved in the depths of countless souls. In this city built of lies, his only weapon is the past forgotten by everyone.
