A power-hungry Sultan commissions a powerful fighting robot named Pluto (Bruton in the dubs) with 1 million horse power, and sends him to battle 7 of the world's strongest robots: Mont Blanc, Molnar, Brondo, Zeron, Hercules, Photar, and Astro. Bruton manages to easily destroy Mont Blanc by catching him off guard. When he heads to battle Astro, he instead is met by Uran, who tells him Astro won't fight him. Bruton takes Uran hostage to lure Astro into a fight, and goes and destroys Molnar...