Five highly trained teenagers Keyop, Jason, Princess, Tiny, Mark and their robotic protector 7-Zark-7, are the invincible, transmutable G-Force. The group executes the commands of their brilliant scientist-leader as they tackle a giant biomorphic enemy vessel. When they take on the bad guys, the punches, kicks, and yo-yo weapons connect forcefully; to escape, they convert their ship, the God-Phoenix, to 'Firebird Mode', an avian cloud of glowing plasma. In Battle, the quintet takes orders from the dithering, Zark. When Zark's scanners pick up a radio-controlled attack monster, from Spectra, heading for one of the Vitaluman vaults so begins the cataclysmic Battle of the Planets. Zoltar wants to control this vital resource and thereby the universe. With the fate of the entire galaxy hanging in the balance, only G-Force can prevent Zoltar's plan succeeding.