I'm not a doctor, but the ventilators in the ICU listen to my instructions. Jiang Yan, a veteran abandoned by the system, relies on neural interfaces to control life machines and is called the "tuner of death." Qin Xiao wants to replace him with AI, Lin Zhao vows to expose his black box, and Chen Xiao wants to seize the system for biological control. And the girl Su Tang who was once rescued by him is approaching the truth step by step: Whose fate is being rewritten with every parameter adjustment? When ventilators no longer rely on doctors, do humans still deserve the right to make decisions about life and death?