The dark palace of the Dayao Dynasty is deep, and the daughter of a guilty minister, A Jin, survives as a maidservant. In fact, she has the fate of the secret tribe's Nirvana, and becomes a vessel for the essence and blood of the tyrant Xiao Che to consolidate the imperial power. She suffers all kinds of humiliation. In the ups and downs of the palace, her relatives and friends died one after another to protect her. Hatred and desire to survive were intertwined. She harbored her obsession with reviving the secret clan and explored the secrets of the dynasty step by step. Xiao Che was deeply troubled by the backlash of the secret technique, but he was imprisoned by paranoia but moved sincerely. Between love and hate, the blood feud of the secret clan and the conspiracy of imperial power gradually emerged. The two struggled with the truth and choice, and finally ended up in the endgame of the Ember Palace, where love and hate ended in a regret that ended without a problem, leaving them with half a lifetime of regret.