It was just another day aboard Moon Base 1, according to the clocks. Officially it was day, but Lambert had suspicions. He slept the ten hours he was prescribed like everyone else, but he always awoke feeling like he slept no more than three. Most of his colleagues agreed with his feelings. The moon base was constantly being expanded, across the surface of the moon and even inside of it.
He had heard rumors that after breaking through the crust they encountered an extremely rare form of radiation. There was no concrete evidence of this, but it made him worry. What if one day he woke up with a third arm? But with no evidence, he couldn't push this claim. Lambert just wanted to go home, but his contract had him trapped on the space rock for another three months.
Lambert entered the airlock and waited for it to depressurize, before the doors opened and he stepped onto the moon's surface. He waved at one of his colleagues, an elderly woman named Chen as she operated a crane clearing out a meteorite crater, and approached his work station to collect debris from around the crater.
After working for an hour, a shadow appeared overhead. No alarms had gone off, so it wasn't a meteor. Lambert looked up, and gasped at the site of a destroyed Getter Robo. He had only seen them on TV reports, back during the dinosaur epidemic and when the military first contracted them. It was insane to see one here and now, in person.
The Getter floated towards the moon's surface, descending slowly a safe distance from Lambert. As it neared the surface, Lambert stepped forward to examine the giant machine closely. With no warning, black ooze spilled from the machine and covered Lambert. At first, he thought it was oil, but this thought quickly faded as the ooze seeped into his airtight suit designed to withstand the void of space. The ooze felt alive.
Lambert screamed as the ooze began to seep into his skin, calling into a silent radio for anyone to help him. Then the ooze began to eat Lambert from the inside out, draining his flesh into its' being, and pulling his mind along with it. As soon as Lambert and his suit were gone, the ooze moved on, now slightly larger than before.
The ooze crept towards Chen as she hauled up a piece of the meteorite, unaware of Lambert's fate and her own impending doom. The ooze rose into the air, its full height fourteen feet tall, and then it washed over the crane and onto Chen. Chen cried out in terror as the ooze crept inside the suit, and then under her skin. She begged for someone to help her, but the ooze had already eaten through the radio before attacking her.
With Chen dead, the ooze crept through the holes in Moon Base 1, holes in between atoms, and invaded the colony. It took twenty minutes before Lieutenant John Diallo made a distress call to Earth. "Help us, please! These… Invaders! They're like a black sludge that eat every organic material they encounter, and they move through the walls like they aren't even there! Hundreds are dead already, and the Invaders keep growing! Please, help us! I don't know how long I have until they reach the command room! Just please, do something!"
Within three hours the entire moon was covered in the Invaders. The people of Earth watched in fascination as the moon slowly turned black, unaware of the dark origin behind the color change. A day later, the pentagon released an official statement. "The moon has been taken over by an unconfirmed alien Invader. We are dispatching a squad of Getter Robos to deal with the Invaders, and to recover any survivors."
Two days later a large shuttle containing several Getter teams approached the moon. The first was Getter Robo Zan, an almost sexist version of the classic Getter. In its first configuration, it closely mirrored Getter-1, but with spikes pointing down, a pink frame, a metal skirt, and four red wings on its back. It was piloted by Azane Mizuki, Tsubaki Akiyama, and Kaede Shibaski. An entirely female team made of Japanese black ops members, trained in ninjutsu.
The next was Getter Black, a black redesign of Getter-1 with bleeding red eyes and a black and red cape. It was piloted by Ken Minamikaze, Misa Ikari, and Sho Tachibana. Until this point, Getter Robo Black had been used purely for suicide missions that the pilots were not expected to survive. Despite this, the pilots had survived fate three times.
The third and final Getter was Dino Getter Robo, a spiky and slender version of the classic Getter, that was crude in design. It boasted two large white wings and looked closer to a single machine rather than three than the other Getters. It was piloted by Joshua Banks, Adande Jackson, and Dan Sadowski.
Each Getter had been given a "minigun" to use on the mission, with a backpack full of items. They had been ordered that once they ran out of ammo, they were to change configurations to their second form and flee, and strategize how to deal with the Invaders without guns. Little was known about the Invaders, the only tidbits of information coming from a man's dying words.
As the shuttle approached the surface of the moon, the cabin began to depressurize. Once completed, the shuttle doors opened and the Getters jumped out, falling guns blazing into the blackness. They had no idea the hell they were entering. This would mark the beginning of the Hour-Long war between mankind and the Invaders. The first of the Moon Wars.