This is the Way the World Ends...

The Beast Planet targets planet Fire. Graveheart and Tekla must hurry to find the world engines. During the invasion, Graveheart is injured while saving prince Pyrus. The Grand Vizier witnesses the sacrifice and reconsiders his judgment towards the outlanders. In the end, everything is lost for planet Fire but the Grand Vizier sacrifices himself and tells prince Pyrus that his new friends are indeed worthy ones. Prince Pyrus orders the Vizier to evacuate with the rest of his people, because he still needs his guidance and company. The Vizier disobeys, saying that Pyrus is old enough to rule, and that the Vizier does not want to die a coward. The Grand Vizier uses the world engines to ram Planet Fire onto the Beast Planet's claw, hoping that it will destroy the Beast Planet, The Beast Planet consumes planet Fire anyway, killing the Grand Vizier.