The ancient little spirit dragon Bai Ze descends to the mortal realm to find the heart for the Creator Pangu, whose spirit heart was stolen and whose soul was on the verge of destruction. She accidentally encounters Chu Mo, the Crown Prince of Great Chu who was framed and fell off a cliff. Sensing the dark mysterious energy of Xuanming on him, she recognizes Chu Mo as her father and stays in the Eastern Palace. The little white dragon Bai Ze uses spirit dragon divine power to cure Chu Mo's leg ailment, helping him smash the conspiracy for the throne succession, and successively exposes Crown Princess Xie Qingli's fake pregnancy and the Fifth Prince Chu Xiao's collusion with the Demon Spirit Master Xuanming in their evil deeds. In the end, Bai Ze joins forces with Pangu to seal Xuanming and subdue the fierce beast Pixiu, protecting the stability of the three realms and the mortal world. Chu Mo ascends the throne as emperor, and Bai Ze becomes the state-protecting spirit dragon princess, happily enjoying mortal family affection.