The protagonist is an inconspicuous military intelligence analyst during the Anti-Japanese War. He unexpectedly acquires the ability to "deduct battle situations" and can rehearse in his mind the consequences of every tactical decision in the next 24 hours by accessing military maps or key battlefield information. However, the larger the deduction range and the longer the time, the more the consumption of life will increase exponentially. He must use his limited life to leverage unlimited victory in the dual game between the intelligence battlefield and the real battlefield.
