After her family is killed by her childhood sweetheart, A Mai disguises herself as a man to seek revenge. Along the way, she rescues a royal heir, joins the military, and rises to commander through her battlefield successes. As war intensifies, A Mai is torn between duty, loyalty, and the pain of her past while uncovering hidden truths that will shape the fate of the nation.
Adapted from Zheng Zhi's novel "Victim in Me", Nobody Knows tells the story of a ten-year-long gloomy past of several adolescents. Teenage Qin Li got boycotted and teased at school because his father had committed robbery homicide. Yet, the transfer student, Huang Shu, together with his friends Wang Di and Feng Xuejiao, stood firmly by his side, and the four of them formed a solid friendship. However, the things that happened as they grew up kept challenging their relationship. To support each other or to betray? What would they choose to do?
Based on real-life events, the film recounts the efforts of the Wuhan medical staff as they attempt to deal with the rising cases of Covid-19.