I, {Zhao Heng}, am the legitimate prince of Dajing, but I am caught in a fight to kill my legitimate son. The unjust case against my mother's family has not been resolved, and the powerful minister Qin Yuan is pressing every step of the way. Accidentally awakened the "time and space deduction system", which can retrace key nodes and predict crises. He originally wanted to use this to protect his mother clan and stabilize the government. However, due to the arrival of Nanchu and the pro-emperor Xiao Qingyi, he was involved in deeper entanglements - is she a "chess piece" sent by a neighboring country, or is she the redemption of fate? Qin Yuan's conspiracy, the family blood feud left over from history, and the hidden war crisis between the two countries, I need to use the system to overcome many dead ends, protect my country and my loved ones, and finally start a fateful showdown with Qin Yuan, and restore peace to the world.