After pleading for an imperial heir for ten years, Imperial Noble Consort Chen, Yun Qinghuan, finally gave birth to the eldest legitimate son, whom the Emperor rejoiced to name Crown Prince. Unexpectedly, the primary wife slandered the Crown Prince as an illegitimate child, and the blood-testing for parentage became an "ironclad proof." The Empress seized the opportunity to force the mother and son into the Chiyan charcoal punishment and the iron cage sinking into the abyss. At the critical moment, Yun Qinghuan saw through the scam of the blood-melting powder, uncovering the monstrous conspiracy of the Empress to frame, silence, and poison the crown prince. Enduring her grief, she gathered the evidence of crimes, brought down the Jingguo Duke's estate, deposed the Empress, personally wore the phoenix crown, and held the phoenix destiny.