The protagonist Li Jian, a history geek who is obsessed with the Three Kingdoms strategy game, accidentally traveled through time and became a "bandit general" who was deprived of his military power due to a defeat in the Cao Wei Dynasty in the late Cao Wei Dynasty and was left with an empty title. The starting point he faces is: the treasury is empty, the confidants are scattered, the boss above his head is Sima Yi, who will usurp the Wei Dynasty in the future, and the only person around him who can be mobilized is a crazy princess (Zhen Mi's niece) who wants to assassinate him all day long. Just when he thought this was hell mode, he bound the [History Correction System]. The system tasks start from "providing clean water to the frontline wounded camp (reward: elementary medical skills)" and gradually upgrade to "increasing the grain production of the manor you control by 50% within a month (reward: intermediate agronomy + famous general summoning card × 1)", "inciting a rebellion against a core staff member of the Sima family (reward: intelligence network + intermediate strategy)". Relying on the skills, talents and materials obtained from completing the mission, Li Jian started from small things such as training troops in the fields and developing technology. While dealing with the eyeing Sima family, he conquered the civil servants and generals who had been frustrated in history. As a military general, he promoted an all-round reform behind the scenes covering agriculture, commerce, military, and politics. He finally took advantage of the crisis caused by the Sima family's ambitions to oust Cao Wei in one fell swoop. He supported the princess who had become his most important ally and lover as the emperor, established a new order, and achieved the ultimate revision of history.