A year after the events of the television show, Brave King GaoGaiGar, the GGG has spent its time fighting the terrorist organization of BioNet. Gai, with the absence of Galeon, now has the Phantom Gao, to fues with to begome GaoFar, and then to Final Fuse into GaoFaiGar. Mamoru, gone for over a year, now returns, along with Galeon, and creates havoc all over the world, trying to find peices of an artifact known as the Q-Parts. When Mamoru fuses with Galeon and the old Gao-Machines, its GaoGaiGar versus GaoFaiGar! It becomes apparant that this Mamoru is not the real Mamoru, but is rather a member of the group that created the original Zondar threat. With Soludato-J and the J-Ark captured, GaoFaiGar and the GGG must stop this new menace before it destroys all of humanity!
In these last episodes, the full threat of the Zondar forerunners is shown, and the introduction of GaoGaiGar\'s true form is given: Genetic GaoGaiGar! A fantastic conclusion to this classic mecha epic.