Zhao Heng, a graduate student in the Department of History, woke up and became a poor boy from a poor family who was about to starve to death in the troubled times of the Northern Territory. This place is divided by warlords, exploited by aristocratic families, refugees are everywhere, and human lives are like grass. Zhao Heng relied on his modern historical knowledge and the ruthlessness honed from the bottom, starting from picking up rags and collecting refugees, and gradually built up an army of "mud-legged men" who were not favored by aristocratic families. He promoted farming, building medical camps, enlightening the people, and even implanted "firearms" and "military espionage" into this era. The female general Shen Qingya follows her because of a family feud, the medical officer Chen Jiuzhen stays because of his ideals, but Cui Wangbei, a son of an aristocratic family, laughs at him as "a delusion from a poor family". When Zhao Heng captured the first city, he suddenly discovered that the troubled times he traveled through were exactly the "hundred-year historyless" period that had been deliberately erased from the history books - and he wanted to rewrite this history with his own hands.
