La película está adaptada de la novela del mismo nombre escrita por Yan Zhiyang. Cuenta la historia de Shen Tuo (Liu Lincheng), un descendiente de la técnica oficial de Mohist, que ingresa solo en la Prisión Promesa para rescatar a su amada esposa, Jiang Ren (Liu Jingyi).
Another chapter in the Journey to the West saga, this time Tang Sanzang and his disciples must attempt to cross Fiery Mountain. But the region is controlled by demons led by the Bull King, and it seems that Sun Wukong’s own past may prove to be a bigger obstacle than the volcano blocking their way.