Beryl was the King's favorite until the jealous Imperial Concubine Li murdered Beryl’s newborn son in cold blood. To Beryl’s horror, the King pardoned the murderer because she was pregnant with his next heir. Forced into the Cold Palace, Beryl feigns insanity to survive, secretly learning the lethal arts of seduction and dance from a disgraced former Empress. Returning to court with a rain-praying dance that captivates the nation, Beryl launches her path of rebellion. She won't just win back the King’s heart—she’ll burn the entire dynasty down to avenge her child. It's a journey of a Cinderella turned vengeful Queen.