In 1932, the haze of the "September 18th Incident" enveloped the land of China. The three northeastern provinces had fallen under the iron heel of the Japanese army. The Japanese army attempted to fully invade China to realize its ambition. Shanghai, this prosperous magical capital of the East, has become the core battlefield for fierce competition between various forces. The Japanese military's secret service expanded wantonly in Shanghai like a cancer, collecting all kinds of intelligence by any means to prepare for further aggression. In order to maintain their own rule, the Kuomintang military commanders and central commanders fought openly and covertly with Japanese spies. The underground party organization of the Communist Party of China, upholding firm national justice, fought tenaciously in the darkness and worked tirelessly to protect the interests of the country and the people. A thrilling spy war was quietly staged in every corner of the city.
