The Battle of the Flamimg Foundry is a final battle where MK's team battle the Demon Bull King and the Bull Clones while working together with Princess Iron Fan and Red Son to free the Demon Bull King from the Mysterious Whisperer's possession.
A week after MK defeated the Demon Bull King, the took his anger out by destroying parts of the Flaming Foundry until he discovered an energy source underneath the Flaming Foundry. Interested in the energy source, the Demon Bull King had the Bull Clones dig up the energy source for him.
After the Bull Clones were able to dig up the tomb, the Demon Bull Family attempted to open it but failed, as the required a magical key to unlock it. Once Princess Iron Fan and Red Son were able to retrieve the Skeleton Key, the Demon Bull Family used it to unlock the tomb. However, once they did, they discovered that there was nothing inside but bones until the energy source went inside the Demon Bull King's armor, taking control of the Demon Bull King and the Bull Clones.
Later on, the Demon Bull King and the Bull Clones took over the city during the time MK was training with the Monkey King.
The Battle of the Flamimg Foundry