A grassroots officer during the Anti-Japanese War accidentally activated the "battlefield deduction system" based on future quantum communication technology. The system can display the trajectory of enemy actions that occurred on the battlefield in the previous 24 hours (but cannot be traced back earlier), and provide fragmented suggestions for victory rates, casualty estimates, and optimal combat plans based on current information. At the same time, every time the system is activated, the user's physical strength and lifespan will be greatly consumed. The protagonist must use limited intelligence fragments to deduce the truth, find out the insider, and smash the Japanese army's large-scale sneak attack plan in the "counter-insurgency battlefield" where it is difficult to distinguish between ourselves and the enemy.
