Everyone dreams of transmigrating.
It seems that if you transmigrate into the past, you can bring modern knowledge with you, make a fresh start in that world, and leave all your failures in reality behind.
But not everyone is lucky enough to transmigrate as a king, noble, or high-ranking official. If you end up as an ordinary person, most of the time in a feudal dynasty, surviving is on nightmare difficulty.
Two souls from the future are lucky enough to beat the odds and become rulers of their own realms.
Only…
One is the last emperor of a small frontier kingdom; the other is a humiliated emperor of the Central Plains.
With the Mongol Empire at the height of its power,
how can they change the fate of their fallen realms and their people?