Modern negotiation expert He Yunzhou transmigrates as the last crown prince, captured by an enemy state and awaiting execution. Using psychology, game theory, and negotiation skills, he debates the enemy court's scholars into silence. The emperor of the enemy state can't bring himself to kill He Yunzhou and instead appoints him as a "brainwashing instructor." Behind the scenes, He Yunzhou builds his own faction and exploits the information gap to stir up civil unrest in the enemy state. In the end, he restores his kingdom and turns around to annex his former captor.