The film is adapted from real events in the fight against the COVID-19 epidemic, with Wuhan Jinyintan Hospital as the core story background. It also takes into account sister units such as Wuhan Tongji Hospital, Wuhan Pulmonary Hospital, Wuhan Union Hospital, Wuhan University People's Hospital (Hubei Provincial People's Hospital), Vulcan Mountain Hospital, and Fangcang Hospital. It uses Wuhan medical staff and medical teams from various provinces and cities across the country who came to Hubei as prototypes of the characters, and presents a panoramic record of the magnificent and arduous fight against the epidemic.