Lin Yue, a top student in the Department of Modern History, accidentally traveled through time and became Xiao Che, the "waste legitimate son" of the Great Yan Dynasty who shook up the government. What he inherited was not only an identity that was ridiculed, but also a life-and-death chess game - his father Xiao Zhan was on an expedition to the north. His life and death were uncertain. Undercurrents in the court were surging, the emperor was eyeing him, and side forces were ready to move.