Five-year-old Yaya is the second daughter of Ningyuan Houfu, but because her mother died in childbirth, she was regarded as a "disaster" by her father Si Tianlei and her two elder brothers Simo Bei and Siming Hao, and was bullied. On the eve of her sister Siloxue's birthday party, she was falsely accused of cutting off her sister's dress. She was beaten by her brother and thrown into a mass grave. When she was about to die, the seal between her eyebrows was unlocked, and her spiritual pet fire phoenix "Fire Fire" appeared to repair her incomplete soul and teach her the art of spiritual talismans. As the plot progresses, the mystery of Yaya's life experience is gradually revealed - she is actually the daughter of the emperor and Su Yutong, the first female heavenly master at that time. She was exiled to the prince's mansion due to the conspiracy of the queen and the imperial master. In the end, at the palace banquet, the imperial master controlled Siluoxue to assassinate the emperor. Yaya and Huo Fenghuang worked together to fight against him and destroyed him with the Phoenix Jade Pendant. The truth was revealed, Ningyuan Houfu was severely punished, and Yaya was recognized by the emperor and canonized as "Princess Yunhuang". She finally returned to her real family, gained the father's love from the emperor and the protection of Cang Lingzhou, and got rid of the name of "disaster star" and became a beloved little princess who protects the country.