Autumn 1941, Shanghai occupied area. The surveillance network jointly woven by the Japanese Gendarmerie and Wang Puppet Agent No. 76 Envelopes the entire city. A top-secret operational plan about the Japanese army's upcoming adjustment of the Yangtze River blockade was sleeping in the safe of the Super High School. The Juntong Shanghai Station received an order: This plan must be obtained within seven days, otherwise the resistance forces in the lower reaches of the Yangtze River will face catastrophe. The mission codename is "Raven".
