Song Xiaoyu, an unconventional cultivator, is banished by the Heavenly Court to the Great Sheng Dynasty, where she becomes the true daughter of the Marquis of Ningyuan who was abandoned in the countryside. She is supposed to help the impostor heiress, Song Qinghuan, rise to power, but she refuses to follow the script. Sharp-tongued and skilled in combat, she tears apart Song Qinghuan's schemes disguised as innocence, wins over the old matriarch of the marquis's household, and meets Prince Li, Xiao Heng, who is afflicted with a deadly poison. She ventures into the royal autumn hunt, foils the Second Prince's conspiracy to seize the throne, defies fate to save Xiao Heng, and uncovers an old case involving the exchange of children in the marquis's household and the poisoning of the legitimate wife. One apparent villain after another falls, but behind all the turmoil, a mysterious mastermind is emerging from the shadows. The greater game has only just begun.