In the early 1210s AD, shortly after the unification of the Mongolian plateau, the authority of Genghis Khan (Temujin) was at its peak, but the frenzy of foreign conquests (especially the Jin Kingdom and Khwarezm) had not yet fully begun.
After traveling through time and becoming Tolei (the fourth son of Genghis Khan), in the era of the rise and conquest of the magnificent Mongol Empire, he used modern wisdom and knowledge to struggle to survive in the whirlpool of power, war, family affection and morality, and ultimately changed the trajectory of history.