The Great Yong Palace is as deep as the sea, and six women enter the Nine-Layered Palace with a poisonous conspiracy - Su Ruoxue, the princess of the subjugated country who hides the blood of dragon descendants, uses the hands of the East Jishi Factory to massacre all the concubines, and uses the blood and tears of the people as a chess piece to disrupt the struggle between the northern and southern gentry. Gu Mingwei, the daughter of a powerful minister, controls the prince's puppet, poisons and kills the palace maids who leak secrets, lies about military intelligence, and regards the lives of thousands of soldiers as paving the way for the family's glory. Jiang Lixiang, a medical woman who practiced medicine on both sides, poisoned the concubines who trusted her, strangled the imperial doctor and stole secret files. The doctor's benevolence concealed the ruthless obsession of Qianliang's restoration of the country. Chu Yunshang, the daughter of Orion was actually a cult saint. She set fire to the palace and implicated innocent people. She tortured and tortured the palace maids, and in the madness of love and hate, she transformed into a bloody Shura. Liu Hanyan, the daughter of the guilty minister clings to the queen, forges secret letters to frame the female official, designs an "accident" to frame the minister, and builds a ladder of revenge with other people's bones. Shen Qingyao, a talented girl from the south of the Yangtze River, hides a killer edge. She poisons the appearance of her sisters and steals the talented girl's poems. Behind the mask of talent is the bloodthirsty ambition to control the emperor.
They used power as a blade and human hearts as a chess piece, playing a bloody game beside the emperor's bed. When the secrets are revealed layer by layer - who is the knife in others' hands? Who is the sword holder? In the shadow of the Nine Palaces, there is never a true winner, only flesh and soul crushed by power.