Life Correction Rate: Remainder

Chen Du doesn't have that App on his phone. Eight billion people around the world have it. He didn't. Three years ago, he was a criminal police officer. His partner fell to his death from a building, his fiancée disappeared, and he was punished and suspended. Everyone said "forget it". He didn't. Three years later, he was wearing a security uniform and working the night shift at the community guardroom. An encrypted message popped up on the phone—not an app push, but a line of code. Someone told him: Your partner's death was not an accident. Your fiancée's disappearance is not an accident. The reason why you don't have an App is because someone used the last permission to erase you from the system. And you are the only thing in the entire system that is not divisible - the remainder. He's looking for more than just the truth. It's not just the system he's fighting against. What he has to face is the seven most primitive desires of human nature: greed, dominance, voyeurism, immortality, control, destruction, and the one that has been distorted-justice. Until a delivery boy burst into the guard room, covered in blood. "Help, someone wants to kill me." He is the younger brother of Chen Du's partner. He has that App on him, and the task given to him by the system is to find the truth about his brother's death within 72 hours. That night, Chen Du rejoined the battle he had not finished three years ago.