Emergency department resident Lin Ye possesses a special ability to see patients' death countdowns and high-risk warnings. On his first night shift, he defied all opinions to identify an aortic dissection, successfully saving a life and becoming famous in one battle. Afterwards, he successively recognized various concealed severe illnesses, constantly breaking inherent diagnosis and treatment ideas, which drew quite a bit of controversy. Director Qin protected him, guiding him to standardize judgment methods. Ultimately, he became a living textbook for high-risk case identification, and the whole hospital dared not look down upon this night shift "alarm".