The film tells the story of a group of patriots, represented by Master Hai Neng, Mengjie, and Situ Jun, protecting Buddhist treasures in Leshan on the eve of liberation.
In Liujiajiao Village, a border area in Shanxi, during the Anti-Japanese War, Xiao Erhei attempts to marry Xiaoqin, despite opposition from various conniving locals.
The Public Security Bureau intercept a telegram notifying foreign agents to retrieve the "110 secret". Shi Yan, head of the Reconnaissance Section, starts a campaign of counter-espionage, but one of his agents is soon killed on board a train.
