The Si family, the chief stargazer family of the Dayong Dynasty, was beheaded because of their prophecy that "the emperor's star will be dim and the disaster star is coming." Only the young girl Si Xingwan managed to escape. Ten years later, Si Xingwan changed his name to "Ajiu", hid in the city, and became an outspoken street fortune teller. Based on her family's secret knowledge "star numerology", she has insight into people's hearts and predicts misfortunes and blessings, just to find the truth about the destruction of her family and prevent the real disaster that could overthrow the dynasty.
By chance, she calculated that the "Hidden Dragon Purple Micro Star" that could compete with the disaster star was actually the "waste" Seventh Prince Xiao Jue, who was frail and sick and had no achievements in the eyes of the world. Si Xingwan resolutely decided to use this "useless" prince as a pawn to stir up trouble in the capital. She worked step by step, paving the way for Xiao Jue with extremely accurate prophecies, helping him tear off his disguise and rise in the whirlpool of Kowloon's struggle for heir apparent. From a despised street villain to an emperor's master with every plan, Si Xingwan used the stars as weapons and the heaven and earth as a chessboard to not only avenge her family, but also to personally elevate her prince to the supreme position, reversing the fate of the entire dynasty.
