Devil Z begins the next phase of their plan: construction of a super-weapon on earth's moon intent on obliterating humanity's Jinchökon. Mega and Giga, together with Hydra, Buster and the Decepticon-juniors, head up to the moon to prepare, but Grand picks up their trail and all Autobots fallow, where a brawl ensues. Devil-Z, infuriated at the Autobot's interference, decides to accelerate the plan and BlackZarak fires the weapon, the "Death Para-Machine", on earth, causing an apocalyptic cataclysm across the planet...