Growing up surrounded by monsters, Yaoyao meets the cunning Taoist Zhang Naihe, who is on a mission to recapture the creatures inhabiting their cave and retrieve their stolen treasures, including the highly sought-after "Sky Thunder Pearl". Yaoyao agrees to partner with Zhang Naihe, but they are unaware that their shared history and current circumstances will rekindle a surprising connection as they embark on their perilous quest.