The teenagers in Xigu Village are looking for their partner, Bihui Dog, to study the magic skills based on the traditional custom. Musui finds a little dog, Bandeng, and trains him. As time goes by, Bandeng shows a destructive side of his nature, so all the villagers are complaining and ask to deal with Bandeng. When the leader begins to capture Bandeng, Musui takes him to escape the village. They leave for a fairyland where Bandeng could be leisurely and carefree. However, an inconceivable scene happens…