An ordinary person in 2026 travels through the troubled times of the late Qin and Han Dynasties. With his understanding of the history of Chu and Han, he bets on Liu Bang who has not yet prospered. He lays out the plans behind key nodes such as the Hongmen Banquet, Han Xin's general worship, and the Chu-Han struggle for hegemony. He ultimately helps Liu Bang defeat Xiang Yu and establish the Han Dynasty. However, in the process of changing history, he also discovers that knowing the ending does not mean he can control people's hearts.