Jiang Ye, the youngest chief surgeon at the former Military Region General Hospital, was thrust into the spotlight due to a medical accident and lurked incognito in a remote municipal hospital. Li Qingwu, a genius anesthesiologist who carries a family stigma, has reversed seven near-death surgeries with a single precise dose. When a series of bombings sent dozens of injured people to the emergency room, the two were forced to stand side by side under the shadowless light - there was no time to ask for instructions, no way out, only countdown instruments and heartbeats. He holds the knife, she controls life, every second is a bet of life and death. The outside world questions whether they are sinners, but the real answer is hidden in every wordless look and the blood-stained surgical drape.