The background of the modern tertiary hospital "Linjiang First People's Hospital" focuses on the high-pressure workplace of emergency department and cardiac surgery. The story integrates real medical cases (myocardial infarction rescue, organ transplantation, doctor-patient conflicts) to show the daily life of doctors "scramble for time on the line between life and death" - the sound of the cart in the emergency room, the ticking of the monitor, and the cold white light of the operating light, constitute a special soil for the growth of love. The male and female protagonists have gone from "tacit partners on and off the operating table" to "soul mates who rely on each other in life and death". In a profession where they are accustomed to separation and death, they learn to protect each other with the "benevolence of a doctor".