MK, Mei and Sandy find themselves stranded in the desert, but a familiar figure emerges to save them: Red Son is back! Bringing the trio to his family's fortress, the heroes overstay their welcome with the villainous trio as they try to find out everything they can about the creation of the Samadhi Fire... and soon realize that the first ring is here, in Demon Bull King's nose!

As the Brotherhood prepare their assault on the Celestial Realm, the heroes must train if they have any chance of saving the world!