The protagonist Shen Qianshan is a future history scholar who traveled to the Anti-Japanese War period and obtained the "Historical Corrector" system. The system allows him to see the future direction of specific events at the current time point (similar to "foreseeing fragments"), and gives him the authority to fine-tune history by "entering specific information." But every time he makes a correction, the "historical correction value" will be deducted. When the correction value is exhausted, the soul will be annihilated. He cannot use his golden fingers to build tanks and aircraft. He can only use "a word", "a piece of intelligence" and "a specious rumor" as leverage to move the huge historical gears. He must play a small role well and at the same time correct the path to victory at the lowest cost in the cracks of history.
