{Lin Mo}, who comes from a medical family, entered the emergency department of the First Hospital of the city as an intern, and met {Jiang Yu}, the deputy director who is famous for being strict. During the rescue of a series of car accidents, Lin Mo used his "quick memory" to recommend allergy medicine for the injured, while Jiang Yu relied on "emergency prediction" to prevent the patient from respiratory failure. The two worked together in tacit understanding and became partners. They worked together to deal with crises such as postpartum hemorrhage and food poisoning, and gradually developed trust under high pressure - Lin Mo helped Jiang Yu get out of the psychological shadow of the rescue error, and Jiang Yu guided Lin Mo to overcome his paranoia about medical errors. The director of a private hospital failed to poach people, so he spread rumors and sabotaged surgical equipment to frame the two of them. In the end, they teamed up to prove their innocence. Lin Mo became a formal doctor, and Jiang Yu was promoted to director. They confessed their love on the top floor of the hospital and continued to protect their lives.