Emergency doctor Shen Yan accidentally awakens to the "crack of life" and can see diseases, death countdowns, and even touch the remaining pain of life. But every time he saves someone, he has to pay the price of blindness, paralysis and even losing himself. As the mysterious drug "Zero", the natural empathy network and the "Painless Project" surfaced one after another, Shen Yan discovered that he had been designed since before birth to be a medical interface that carries the pain of all sentient beings. Facing a super system that can predict life and death and make choices for people, as well as human experiments that try to erase fear, pain and rejection, he must find the true way to heal between saving more people and keeping everyone's choice.
