[Reasonable, calm and strong desire for control × Vigor and resoluteness, commitment and love] In the cyber city "New Chang'an", memory has become the most expensive commodity and the most deadly weapon. The top memory hunter Lin Yan accidentally awakened the agent Jiang Lin who was supposed to be formatted during a mission - a "ghost" who had all the past erased, leaving only the killing instinct. In order to protect himself, Lin Yan was forced to enter into a symbiotic contract with this dangerous man. The two shared their senses, life and death. But during the hunts and escapes, they discovered that deep in Jiang Lin's erased memory, there was actually a huge conspiracy to subvert the entire city. When the contract evolves from a temporary measure to an inseparable bond, they must join forces to fight their way through the maze of lies while confronting a more terrifying truth: Who among them is the carefully designed "weapon"?