Zhang Chen is an ordinary modern otaku. One day while watching "Three Kingdoms" at home, he suddenly fell into the Three Kingdoms era and appeared in Cao Cao's camp. He didn't bring anything and didn't know what was going on. He could only rely on his understanding of the history of the Three Kingdoms and began to "spoiler" the future battle situation, which actually attracted Cao Cao's attention. In order to earn a living, he began to work as a "prophet" in Cao's camp. He had to be careful not to be regarded as a spy, but also used his historical knowledge to seek some small benefits.
But as time went by, Zhang Chen discovered that his "spoilers" not only made Cao Cao trust him, but also pushed him into the whirlpool of history. He often had to avoid unexpected things, clashed with various important figures in the Three Kingdoms, and was overwhelmed by the rules of history. The whole process is both absurd and funny. Can Zhang Chen prosper in the Three Kingdoms with the help of modern knowledge, or will he be eventually corrected by history? The story is full of light-hearted and humorous adventures and accidents.