The undercover police inspector Lu Xiao was dismissed and became a wanted criminal overnight. When his blood pupil power went out of control for the first time, dark memories poured out of the entire city - and the only person who could interpret these memories was the forensic doctor Su Ling who was sent to prison by his own hands. They join forces to tear apart the symbiotic network between the police and gangs, but find that every step they take steps on the death trap set by their former colleagues. When the silent girl Xiaoya's graffiti pointed to the underground laboratory, a living superpower project that had been buried for twenty years was awakening from the ruins.
