Li Lao

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.

The film tells the story of the Communist Labour College that opened in the 1960s. Long Guozheng, an emissary from the Communist government and Li Jinfeng, a female peasant student, must fight against the school's more conservative elements. In the film's climax, Li is put on trial and is about to be expelled from the school when she is saved by a pronouncement from Chairman Mao himself.