On the surface, Fifth Prince Li Heng is a dissolute wastrel. In truth, he has modern knowledge as a cheat up his sleeve, and watches coldly as his brothers fight one another to the death amid the turbulent court.
Then the Crown Prince and Third Prince both die suddenly in the Daming Palace.
From the throne, the ailing emperor speaks in a low voice: “Fifth son, how much longer are you going to keep hiding your true self…”