A modern overworked office worker, exhausted by the rat race, transmigrates into the Hongwu era as Zhu Gang, Prince of Jin. He abandons his predecessor's violent and arrogant nature. At first, weary of court intrigue, he wants nothing more than to live a comfortable, carefree life as an idle prince. But when his beloved is unexpectedly caught up in the power struggle surrounding the Eastern Palace and loses her life, he comes to understand the cruelty of the imperial court's internal conflicts. Shifting from passive survival to actively building his strength, he ultimately gives up the rat race in the Central Plains, establishes himself on the northern frontier, and launches a western campaign to expand his territory.