Quick disclaimer : I do not own Steven Universe or any of it's character, just my ocs I added in this story.
October 17th, 2016 ; Sector A
There was a planet with satellites all around, and a protective force field protecting everything.
A red space cruiser flew to the force field.
"State your name and business." Red Zircon said on the satellite transmission.
"Peridot Cut 3JW Facet 0M6. I am here to seek an audience with Red Diamond." The red peridot pilot said.
"Access granted. Land in docking 782J." Red Zircon said.
The force field deactivated, allowing the space cruiser to pass and enter the planet. Then it reactivated.
(Planet Cureia)
The space cruiser landed in the correct landing space, and out came a red peridot, a red topaz, and two rubies.
"Wow! It looks beautiful here!" Ruby 1 said.
"We're not here for sight seeing, Ruby. We have a diamond to see." Red peridot said.
Ruby 1 pouted.
The red gems entered the palace.
(Red Diamond's Throne Room)
Red Diamond sat in her throne chair, swiping the digital screen up as she viewed the latest report from a squadron she sent to go and capture a planet that belonged to White Diamond.
Then the red gem squad came in.
"My diamond, they have arrived." Red pearl said.
"Yes, I see them. (At group) Yes, peridot?" Red Diamond said.
"I came to tell you the bad news. Yellow Diamond found out about your operations and she's planning a full on invasion of this planet." Red peridot said, saluting her.
"But how? I was careful with the planets I captured. She never noticed them before!" Red Diamond said.
"Yellow and Blue Diamond have recaptured White's colonies, on her behalf. My diamond, we need to evacuate the planet before they come here." Red peridot said.
"Do you have proof of their plan?" Red Diamond asked.
Red peridot took out a hologram of Blue Diamond, and Yellow Diamond speaking.
Once the hologram recording finished playing, Red Diamond was appalled.
"No, it's too soon!" She said, clenching her eyes and fists.
"My diamond, I will have your husband and son on a personal transport with me." Red peridot said.
"My diamond." Red Topaz said.
"Then it is settled. Sound the alarms and have every specimen leave on the transports. Make sure they get there on time." Red Diamond said, standing up from her chair.
"But my diamond, what about the humans?" Red pearl said.
"Leave them to me." Red Diamond answered. "Thank you for your report, peridot. Begin the evacuation now."
"Right away, my diamond." Red peridot said, leaving the room with her squad.
(Steven's room)
Steven was sitting on his bed, playing video games on his E-box E, on his holographic screen.
"Get wrecked, Tom!" He said, beating his friend on his shooting game.
"Snap!" His friend said on his mic.
He took a gulp of his coca cola, and ate some of his french fries.
Red Diamond came in.
"Hi mom. Wanna join me in a game of zombie world 2?" He asked.
"Maybe later, we have to leave now. The diamonds are coming to invade our home." She said.
"What? Leave? But this is our home." He said.
"I know, but there isn't much time. We have to go right now." She said.
Steven was reluctant to leave his home, but he knew he had no choice.
(Cruiser Wash)
(A/N – This is basically a car wash for spaceships. Greg works at this one.)
Greg was finishing his day's work, spraying down a soap covered cruiser ship.
Red Topaz approached him, a bit worried.
"Mr. Greg? Red Diamond is evacuating the planet. She has issued a code red across the globe. You must come with me at once." Red Topaz said.
"A code red? What's going on?" He asked, climbing down his ladder.
"The great diamond authority is going to invade this planet, and they're heading for us right now. We need to run." She said.
"Shoot! I'm comin'!" He said, running to her.
"Wait, the big huge ladies are coming here?!" An off color pyrite said, who was also spraying down the ship.
"Yes, leave this ship and get to the transport! They'll be indicated on the central station's map." She said.
"Gosh darn it." Pyrite said.
(6 hours later)
A total of 100 transports were being deployed from the landing sites.
Just as things seemed to be going as planned, there was a swarm of missiles heading to the satellites.
"Oh no! We're too late!" Red peridot said, seeing incoming homeworld fighters heading to the planet.
Two ships, in the appearances of forearms (blue & yellow) came into view.
Red Diamond saw the diamond ships flying over the atmosphere.
"This is an invasion. By order of Yellow Diamond, surrender yourselves or be destroyed!" A yellow squadron leader said, through a blaring intercom.
"Mom, what do we do? I'm scared!" Steven said, frightened.
"We fight our way out. Shoot the cannons, peridot!" Red Diamond said.
"Roger that." Red peridot said, then charged up a cannon and fired a wave of plasma power, which was aimed right at the yellow ship.
(Yellow Diamond's ship)
Steve (prismarine gem) saw the incoming attack.
"Yellow, move!" He said.
Then he was engulfed by the plasma blast.
"Steve!" Yellow Diamond said, alarmed.
(Outside)
The yellow ship was torn in half, falling to the grounds.
"Whoo hoo! That's one diamond down, take that Yellow!" Red Diamond said.
Then several blue homeworld fighters began shooting at Red Diamond's ship.
"Use the diamond bomb." She said.
"But my diamond, that'll wipe us all out!" Red peridot said.
"No it won't. Trust me." Red Diamond said.
"Yes.. my diamond." Red peridot replied.
Then she pressed the button with the skull & crossbones on it.
The ship launched a black and red bomb, flying in homing mode. It's destination was Blue Diamond's freighter.
Then a random fighter got caught in it's position, and collided with it. However, the bomb didn't explode. It continued flying.
The homeworld fighters were attacking some of the transports, with some of the Cureia defenses attacking back.
"Since when did this become a planetary battle?" Steven said, surprised.
"None of my sapphires told me this was coming. What went wrong?" She said.
"Schtuball, we're gonna be okay. Your mother's got this." Greg said.
".. you're right." Steven said, making a slight smile.
(A/N – That's a wrap. This is a universe where Greg had fallen in love with red diamond, instead of rose quartz, blue diamond, or white diamond. This is completely different from the other AUs that are out there. And instead of Red Diamond giving up her form to create Steven, she gave birth like a human would, but gave up a significant portion of her power for him.
Red Diamond is a reject from the great diamond authority as are the other off color diamonds that are out there in the universe. Anyway, more of this will be explained in future chapters. On another note, this is one of the planets Red Diamond owns besides the ones she captures and steals from the great diamond authority. Stay tuned for the next chapter.)