"The Ultra Annihilation Plan is to annihilate Zoffy, original Ultraman and Ultraseven - in other words, those traitorous Ultra Brothers. [...] Right now, the Planet Bat Federal Army are going towards the Planet Ultra of the Nebula M78. It's only a matter of time before your brothers die."
- ―Alien Bat, Return of Ultraman episode 51 "The 5 Ultra Oaths"
The Ultra Annihilation Project is an operation carried by the people of Planet Bat's Planet Bat Federal Army in their war against the Ultra Warriors. The conflict also coincided with Ultraman Jack's final fight on Earth and his eventual return to the planet. Though the exact date of the conflict's start is unknown, it reached its climax in 1972 when Jack successfully destroyed Zetton II and killed the Alien Bat who was using the creature as his invasion monster. With this attack on Earth halted, Jack left to assist his comrades in striking down an all-out invasion attempt on the Land of Light that was taking place concurrently. Though the final battle on the Land of Light took place off-screen, the Ultras were victorious and successfully repelled the Planet Bat Federal Army's invasion force.
History[]
Pre-Return of Ultraman[]
The entire war started due to Ultraman Hikari creating the Life Solidification Technology, enabling Ultras who were killed to be brought back to life. This invention caught the interest of many alien races, including the people of Planet Bat. The Alien Bat instigated the war against the Residents of the Land of Light after they refused to share said technology with the Bat race. This decision resulted in tensions on Planet Bat escalating into civil war, with the Planet Bat Federal Army emerging as the dominant faction and planning to take the Life Solidification Technology by force. While the Planet Bat Federal Army made their way to the Land of Light, a lone soldier went to assassinate Ultraman Jack on Earth with Zetton II as his vanguard.
Return of Ultraman[]
By kidnapping Jiro Sakata and Rumiko Murano, Alien Bat trapped them at the Toa Stadium and forced Hideki Go in a desperate situation to rescue them while struggling to transform due to the original Zetton having killed the original Ultraman once. Alien Bat has the monster rampaging on a city to divert MAT's attention while he bombed their bases, reducing most of their assets to several patrol cars, a handful of weapons and a MAT Arrow.
As Alien Bat threatened to execute Jiro and Rumiko, MAT used what resources they had left to mount a rescue operation, freeing the alien's hostages. After crashing his MAT Arrow, Go transformed into Ultraman Jack and fought both monster and alien in what appears to be the last day of his duty on Earth. With Go presumed dead by his MAT teammates, he was able to retain his humanity without having to reveal the truth about him being Jack's host. Jack then left the planet to journey to the Land of Light, where he went on to support the other Ultras in their conflict. The 5 Ultra Oaths
The Ultraman Mebius[]
The true battle between the Planet Bat Federal Army and the Ultras was massive, and so many Ultras participated in defending the Land of Light, including a young Mebius. The Federal Army unleashed a troop of Zettons and the fight ended with the Ultras being the victor, but both sides suffered heavy losses. Following the conclusion of the conflict, Hikari decided to go on a journey to explore outer space, eventually leading him to Planet Arb where he would encounter its people for the first time.