In ancient times, the Three Pure Ones used the Primordial Unity Cauldron to establish order among the Three Realms. Now the Heavenly Cauldron has shattered, and the balance of the Three Realms is on the verge of collapse. The Celestial Court sends Star Lord Si Chen down to the mortal world to find the fragments of the Heavenly Cauldron, but he becomes entangled in an even greater web of conspiracy.