In a museum in a modern bustling city, young Li Er is a person obsessed with history. In an accident, he touched a mysterious cultural relic of the Tang Dynasty. The light flashed for an instant. When the light dissipated, Li Er found himself on the streets of Chang'an during the Zhenguan period. This era is already changing, but the intervention of mysterious forces has brought together characters from different eras such as Li Yunlong, Zhao Yun, Chow Yun-fat, etc., As well as historical misplaced characters Yuwen Chengdu, Princess Taiping, An Lushan, etc., And a legendary story that rewrites the trajectory of history begins.
