In the last years of the fictional dynasty "Jing Dynasty", the imperial power declined. The princes fought openly and secretly for the throne. There were many factions in the court and undercurrents surged. Xiao Yan, the fifth prince who originally had no intention of taking the throne, was forced to get involved in this power whirlpool because his mother and concubine were framed and died. He met and fell in love with the general's daughter Murong Xue, and the two worked hand in hand step by step in the conspiracy, gradually uncovering the secrets hidden in the palace. At the same time, the ambitious third prince Li Chengze obstructed him at every turn, the concubines in the harem also had their own hidden agendas, and the situation in the court was even more turbulent. On the road of revenge and struggle for the throne, Xiao Yan gradually grew into a scheming monarch. He finally set things right and restored the imperial court, but he also paid a heavy price in the game of power.