Prince Ning Buque of the North is poisoned with a severe venom and his martial arts are completely crippled, and he is sentenced to the Imperial Academy to reflect on himself. On the surface, he acts unrestrained and wild, playing the mad and evil one, while secretly investigating the true culprit behind the poisoning. At the county yamen, he kills the son of the minister, at the imperial court he overwhelms the hostages of various countries, forcefully breaks off his marriage with Prime Minister Liu, and strongly supports the crown prince, provoking successive assassinations by the second prince and various nations. Moving step by step, he only aims to ferret out the real culprit and retrieve the antidote before the poison flares up.