During the final stages of the Liberation War, Captain Zhuang leads a small PLA unit to pursue a retreating Nationalist regiment hiding in Heishan Temple, where a contagious disease has spread among their soldiers. Disguised as medical assistants, Zhuang’s team infiltrates the temple to assist Dr. Wei, a local physician captured by the Nationalists. Together, they treat the sick, contain the outbreak, and map the tunnels to rescue soldiers who wish to defect.