Fifteen years ago, the white-robed poet and swordsman Li Qingkuang sealed the demonic cult within the green jade flute. Fifteen years later, he transformed into the Supreme General to protect the Qian State, only to be publicly deposed by the Empress Yu Qingqiu, whom he was loyal to. Believing slanderous words, she concluded that the jade flute was the key to the demonic cult's treasure, and using the lives of his old subordinates as leverage, she swore to seize it. The entire court cursed him for lusting after merit and power, yet no one knew that the day the jade flute left his hands would be the day the demonic cult made its comeback. Even more unknown was that the empress sitting serenely on the dragon throne and the demonic cult leader who was a ghost under his sword were actually a pair of twin sisters. When the jade flute fell to the ground, the demonic cult undercover agent lurking beside the dragon throne instantly tore off their disguise, the imperial guards defected, the imperial court fell, and the empress was filled with unavailing regret.