In 1938, with the smoke of the Battle of Shanghai still lingering, Wang Hao, a modern-day programmer from Sichuan, accidentally transmigrates into the 108th Battalion of the 36th Division of the Sichuan Army, becoming the commander of the “Straw Sandal Battalion,” which is on the brink of annihilation. After binding himself to the “Resistance and National Salvation System,” he discovers that every mission he completes, from seizing a Japanese army’s binoculars to cracking a poison gas code, plunges him deeper into a web of espionage: