Sixty five million years ago on prehistoric Earth, the large meteor that ChoRyuJin pushed back appears and crashes, bringing about an ice age and causing the dinosaurs to go extinct. ChoRyuJin falls along with it and lies disabled. In the present, ChoRyuJin bursts out of Amaterasu and confirms the Chinese dragons’ locations. He separates back into HyoRyu and EnRyu and the two split up to assist in each area. Entouji reports that the Zonder metal plants are nearing completion and will Zonderize all the trapped civilians, leaving the Japanese dragons as 3G’s only hope. They arrive in time to assist the Chinese dragons and overpower ZX-14 and ZX-15. The Chinese dragons wonder how they were restored after hibernating for so long, and the Japanese dragons explain how they came in contact with THE POWER. When ChoRyuJin pushed back the asteroid, the ES window malfunctioned and sent them to Jupiter. Instead of being disintegrated by the friction, THE POWER sent them through a wormhole back to Earth. But since they were going faster than the speed of light, they ended up traveling back in time to the age of the dinosaurs. After crashing on Earth, their desire to survive and see their comrades again allowed THE POWER to preserve them to the present day. With ZX-14 and ZX-15 overwhelmed, Arm and Intestine Primeval take matters into their own hands and fuse with their partners.
The Primeval Fusions turn the tables on the dragons. Hyuuma tries to ram Susanoh into Intestine Primeval but gets sucked into the black hole. Mic contacts the main order room and reports that he found Izanagi. Using his transmitter, 3G is able to communicate with Guy and Liger. Liger says that the sand crystals completely paralyzed their machinery, but fortunately they have the same frequency as Disc M which can destroy them. He needs ten minutes to send them the data and Taiga hopes that the dragons can hold on long enough. With the Zonder metal plant nearing completion, the Japanese dragons announce that they must perform Symmetrical Docking with their Chinese siblings. The Chinese dragons protest that they’re not programmed to cross combine and attempting to do so is dangerous, but the Japanese dragons remind them that they’re giving up before trying and under no circumstances should a 3G member give up! The Chinese dragons agree and their SympaRate rises to two hundred percent. HyoRyu and RaiRyu combine into GouRyuJin while EnRyu and FuRyu combine into GenRyuJin to everyone’s surprise. Arm Primeval tries to slam GenRyuJin with his fist but the latter pushes him back and punches him with his cement mixer. GouRyuJin blocks Intestine Primeval’s attacks then pummels her with his tonfa. She tries to suck him into a black hole but he uses Aurora Illusion to create fake copies of his body. Intestine sucks them all up but the real one descends from above and chops off her intestinal tube. Arm Primeval shoots acid but GenRyuJin blows it back in his face. Leo receives the data from Liger and has Mic play Disc M. The sound waves shatter all the sand crystals and allow Izanagi, Guy, Goldymarg and J to move again. Kaidou thanks Mamoru and Guy tells J not to get in their way again. J replies that he’ll repay the favor by helping them and speeds off towards Mexico. GouRyuJin and GenRyuJin use their ultimate attacks Thunder Blizzard and Burning Hurricane to rip out Nose and Stomach Primevals’ cores. The Brave Robot Corps and the 3G ships arrive in Egypt and Arm Primeval tries to disable them with the sand crystals again, but Mic renders his attack moot allowing Guy to combine with Goldymarg. J arrives in Mexico and fires his J-Quath straight into the black hole. Inside, Intestine Primeval spots Kaidou riding on the J-Quath and tries to appeal to him with his mother’s face. Kaidou however tells her that he won’t fall for the same trick twice and lets the J-Quath ram her through. Guy uses Hammer Heaven and Hell to grab Arm Primeval’s core while Mic uses Disc X to destroy the Zonder metal crystals and free the trapped civilians. J destroys the Primeval Fusion with his cannons and frees Susanoh in the process. Kaidou purifies the cores and breathes a sigh of relief at last now that his mother is safe. Mamoru purifies Stomach Primeval’s core but before he can get to Arm the latter regenerates himself and stirs up a sandstorm to cover his escape. As the recovery operations begin, GouRyuJin and GenRyuJin collapse and their Japanese dragon halves glow, unable to contain THE POWER any longer. J and Kaidou recognize the glow as the Destructive Power and Pagliaccio identifies its source as Jupiter.
Traditionally, every Brave show since Fighbird would take one of its support combiner teams and add a new member to it, allowing them to combine into a bigger robot. GaoGaiGar being the trend-bucking show that it is, ditches that long running staple in favor of something more simplistic. Cross combining the dragon robots doesn’t sound like the most exciting idea, especially when you consider that they probably came up with it by playing around with the toys like what Toei did with older Transformers G1 characters. I find that it works nicely within the show’s setting. Plus the cast of robots was big and varied as it is without adding yet another robot with a blank personality which is something they already did with the Chinese dragons. This new combination is brought to us courtesy of THE POWER, a mysterious energy source with many properties that the writers can and will abuse for their convenience, like making asteroids travel back in time and cause dinosaurs to go extinct. It’s nice that J’s ocean nap cooled him off and made him realize that he should accept all the help he can get and give back in return. It made for a pretty kickass battle and a great episode overall. The expression on Arm Primeval’s face when Mic nullified his sandstorm was just priceless.