Yin Nian is the illegitimate daughter of the emperor of the Kingdom of Beasts and has been humiliated for eighteen years. On her eighteenth birthday, her phoenix bone and phoenix essence were taken away by the empress and her daughter, and they were thrown into a demonic stream. Yin Nian survived a desperate situation and was adopted as a foster daughter by the great demon Yin Nu. She practiced magic and met Yuan Xinsui, the young master of the Xian clan. She returned to the Kingdom of Beasts with the power of rebirth, revealed the truth about Di Ji's imposter, and rescued her child. In the end, Yin Nian teamed up with Yin Nu and Yuan Xinsui to break the seal of the demon stream, take revenge on the empress, the Shengshan Sect and the Feng family, and seek justice.
