In the spring of 1940, undercurrents surged in Nanjing under the rule of Wang Puppet regime. Lu Chenzhou, who appears to be the vice president of the "China East Asia Joint Chamber of Commerce", is actually the latent military command agent "Night Owl". He worked among the Japanese Military Police, Agent 76 Headquarters and Wang Puppet officials, and established an important intelligence line from Nanjing to the base area in northern Jiangsu. When a piece of top-secret information about the Japanese army's "Special Mopping Plan in Central China" comes, Lu Chenzhou must complete the delivery under the eyes of the enemy within seventy-two hours. And a large cleaning net targeting internal lurking personnel is quietly closing in on him.
