In the "Eternal Night City" where technology can strip away, store and trade memories, the amnesiac private detective Ling Zhou is like an island floating on the sea of oblivion. He relied on instinct and remaining fragments to survive in the urban jungle where neon lights and rain intertwined. An ordinary commission led him to accidentally obtain a mysterious chip that recorded his blank past. In order to find "himself", he embarked on a dangerous road. He will face giant corporations that control the memory trade, memory dealers who wander in gray areas, and a mysterious woman closely connected to his past. Every step may be a trap, and every flashback of memory may push him deeper into the abyss.