Thousands of years later...
"Fascinating!" Entrapta said to herself. She had been spending her morning digging through a scrapyard outside of her castle looking for interesting and/or salvageable tech to bring back to her lab. It had been her favorite pastime ever since the war against Horde Prime ended, but she would always take someone with her to help bring whatever she found back. This time, Catra was on duty.
Catra hated being around any scrap pile; it reminded her too much of when Entrapta spent time in the Horde, but she had some consolation in the form of the space cat, Melog, who stood conveniently nearby while she patted his head.
"I know," Catra said to Melog, "She always has to take forever on these ridiculous ventures."
Melog affectionately sniffed Catra's hair, which had now grown out a bit and was tied in a messy ponytail.
Catra chuckled a bit at Melog, then shouted down to the geeky princess: "Hey! How much longer? I still want to be back at Brightmoon before lunch."
"Relax!" Entrapta shouted back, "I've almost got what I need!"
Entrapta was busy trying to remove a piece of steel from a pile; unfortunately, it was stuck tighter than she had expected. As she continued pulling, now with her hair as well as her arms, she wiggled it back and forth, and then lost her footing, sliding down the pile and scrambling just in time to avoid the landslide of scrap that quickly followed. As Entrapta stood back up and dusted herself off, she looked back to the pile, and lit up in wonder.
It turns out that the piece she had been trying to remove was a propeller blade that was still attached to a black hoverplane of some kind that was buried underneath the scrap metal.
"CATRA, YOU NEED TO SEE THIS!" she screamed in joy. Catra simply rolled her eyes in annoyance before climbing down to see what the fuss was about. Once she found Entrapta, she then looked at the plane that had just been partially uncovered.
Catra, in her annoyance, stated the obvious: "It's a ship of some kind."
"I wonder if it still works." Entrapta marveled before running back up and climbing into the exposed cockpit to fiddle around with the controls. As she flipped the switch for the engines, the propellors slowly came to life, blowing away more of the scrap, but then sputtered and stopped. However, Entrapta was not in the least bit disappointed, and popped back out with a massive grin on her face.
"I am SO rebuilding this when we get back!" she squealed in joy before diving back in to see what else worked. Catra simply stood there, only to notice Melog sniffing intently at the ship's hull.
"What is it, Melog?" she asked, then looked to see what he was sniffing at and widened her eyes in surprise; the hull was lined with holes that were obviously bullet holes from laser cannons.
"What happened to you?" she whispered to herself as she got a closer look. She knelt down to look at a particularly large hole in the bottom of the ship and peered inside. As she looked around, Catra could see a LOT of circuitry had been damaged, but then she focused on the most shocking object inside; a large metal head. It looked like it wore a helmet of some kind with an angular fin on each side that made the face smooth aside from the thin visor that resembled a set of tactical glasses where the eyes should be. On the center of the forehead was a red symbol that resembled a sort of armored face.
"What in the…?" Catra whispered to herself in amazement as she curiously reached out to touch it. As she did, her fingers slid down the side of the mask. Suddenly, a techno sound echoed through the hull, making Catra jerk her hand back in fright. Even Entrapta stopped what she was doing and became curious of the noise.
In her confusion, Catra was unable to pull her head back as the visor of the head flared to life, flashing right in her eyes. Catra fell out of the hole and landed on the ground, screaming with a mixture of panic and confusion as she clutched her eyes, unable to see anything. Likewise, the console in front of Entrapta flared with blue light as well, and she too then fell back, dazed, but not blinded thanks to her goggles. Melog ran up to Catra and pulled her out from under the ship, sniffing her face worriedly.
"Melog, is that you?" Catra whimpered. Entrapta stumbled over.
"Oohhhh, what just happened?" she woozily asked. As she regained her senses, she looked down to see Catra, still clutching her face and knelt down.
"You okay?" she asked.
"No, I 'm not okay!" Catra shouted, "I can't see!"
Entrapta shot back up: "Oh, well, uhhh, don't worry. We'll get you back to Brightmoon right now. How's that sound?"
Entrapta ran around, trying to figure out how they would get back in time. Then, she suddenly remembered that she now had a radio to communicate with her friends. She immediately whipped it out and pressed a few buttons before shouting into it: "Hello? Can anyone hear me?"
Static fizzled for a few moments, but then a voice soon came over the other end.
"Entrapta?" Bow's voice said.
"Bow!" Entrapta continued, "I need help! It's really bad, and I don't know if…"
"Entrapta! Slow…down." Bow replied, getting the princess to calm down, "Now tell me what's going on."
"It's Catra! I don't know what happened but she's suddenly blinded and I don't know if it's permanent or not, but she's in trouble. We need help NOW!"
"She WHAT?" Bow's voice resounded with worry now, "Oh, boy. Okay, um, don't panic, I'll let the others know right now."
"HURRY!" Entrapta shouted, then turned and put a comforting hand on Catra's shoulder: "It's gonna be okay. Just hold on. I'm so sorry."
Catra was in too much pain and shock to even respond. Melog made a small whimpering sound; none of them knew how this was going to turn out.
Meanwhile, on Beast Island, the silence of the jungle was broken as a giant green wasp soared overhead and off of the island. It was heading towards the mainland as it had sensed a sudden surge of energy; one that it knew all too well. As it flew, it used its antennae to send up a signal.
"Decepticons," it said, "Wazzzpinator think he found Autobots. Come to where Wazzzpinator is. Matrix piece might be here too!"
In another part of space, as if in response, a cluster of pods ejected from a massive dark ship and hurtled through space…and towards Etheria.
Yup, expect Beast Wars Characters to make an appearace as well. With Beast Island being a thing, I just couldn't leave them out of the picture.