In the twenty-seventh year of Yong'an, Su Cheng'an, the Marquis of Yongning, was framed and imprisoned for "collaboration with the enemy and treason." His wife, Lin, was martyred, and her 12-year-old legitimate daughter, Su Qingyuan, was transformed from the jewel of the Marquis's palace to the daughter of a criminal minister overnight. Hidden with a sharp blade and hidden edge, she planned step by step in the cold pool of the Marquis Mansion, borrowing the protection of her cousin Su Mingxuan to temporarily save her life, secretly cultivated power, collected evidence, and vowed to avenge her parents' injustice.
Encountering the prince Xiao Jingyan by chance, she used a secret letter as a guide to form an alliance. At a palace banquet, she exposed in public the conspiracy of the prime minister and the second prince Xiao Jingyuan to have an affair with Beidi and to seize power, thus gaining a chance to reverse her father's case. After taking control of the power of the Hou Mansion, she used the resources of the Hou Mansion as a chess piece to help Xiao Jingyan succeed step by step in the court game. She used the corruption case in the Ministry of Household Affairs to dismantle the Prime Minister's gang, relied on secret reports from the border to establish irrefutable evidence of the second prince's rebellion, and made her debut in the turmoil of Beijing.
In the deep house, she outsmarted the Liu family and eliminated the dissidents in the Hou Mansion; in the court, she strategized and stirred up the power chess game; outside the border, she went to dangerous situations to obtain evidence of rebellion. From an orphaned girl to a powerful man behind the scenes, Su Qingyuan, as a woman, tore her way through the whirlpool of male-dominated power. Not only does she want to avenge her family, but she also wants to assist Jamel Xiao in stabilizing the government and preventing the invasion of Beidi. In troubled times, she uses her wisdom and courage to play a legend of the phoenix singing in the sky.
