Steven was back in beach city. He used a warp pad to get here. He wanted to check up on an old friend. He marched up to a large field until it just stopped at some sort of cave

???: hold it!

Steven looks up to a hooded figure atop this cave. It uncovers itself to reveal itself to be

Jasper: what do you want now?

Steven: jasper... I just want to talk!

Jasper leaps right in front of the boy

Steven: so.... how've ya been? I know it's been a while since we last saw each other

They both saw an adorable little Beatle come their way. Steven was about to pick it up but jasper still being the stubborn gem she was crushed it until it was nothing but a squashed puddle of blood and legs

Steven: WHY THE HELL WOULD YOU DO THAT?!?!

Jasper: any organic that enters my territory gets murdered! Took me forever to yank all those green earthlings out of here

Steven: you mean grass?

Jasper: I don't know there names!

Steven looks to the pile of spherical rocks behind them

Steven: so what's with the rocks?

Jasper: training

She grabs one roach and tosses it to the pile

Steven: oh. I thought maybe you got into art. That pile really complements the decor!

Jasper kicks the rocks into nothing but dirt

Steven: okay. So, I just came to see if you were interested in moving in with us

Jasper: the hell would I wanna do that?

Steven: I thought maybe it could help us protect our new home. Besides, it could allow to to kick so much ass in wrestling

Jasper snorts

Steven: and you can beat up as many bad guys as possible!

Jasper: really?

Steven nods

Jasper: fine. But only for the beating up bad guys bit. Been missing too much of that action

Steven: well, we better start packing
_____
Steven and jasper return as they pass through some sort of strange canyon packed with cages of other animals, including corrupted gems

Steven: I didn't know this was here

Jasper wanders off as she spots a corrupted ocean quartz

Steven: jasper be careful!

Jasper: shut up! Your not the boss of me!

She walks up to the beast

Jasper: so, you used to be a quartz solder, didn't you? The fuck happened to you? Your such a disgrace! I can't believe I'm even staring at such a FREAK like you! Your almost as bad as that crystal runt

Steven: hey! Leave amethyst out of this!

Jasper: just look at you! This planet ruins everything! Well, except for me. I never want this place to twist me like this. Weakness embarrasses homeworld. You suffer because it's what you deserve! We all get what we deserve!

Steven: okay! That's enough! She's a fellow quartz just like you!

Jasper; you mean was. Just look at it! It's a disgrace to the good homeworld name!

Steven: homeworld is done with wars! We're at peace now! And if you'll let me maybe I can heal her

Jasper: why would I do that?

Steven: ugh! Because I'm the prince and as such everyone needs to do what I say! That includes you!

Jasper: now you listen hear you runt! You might have pink diamonds gem, but you are not my diamond!

She proceeds to get in his face

Jasper: and I am not going to take orders from some weak, sappy, useless piece of dirt!!!

That did it, Stevens inner pink rage burst out sending jasper off her feet

Steven: IM NOT USELESS!!!!

That's when Steven makes one of his fist bubbles as he lunges at jasper making her hit a wall

Jasper: ow

Steven: that Better hurt!

Jasper defends herself by charging at Steven but he grabs her by the shoulders and tosses her off a nearby ledge

Steven: who's weak now? WHOS USELESS NOW?!?!

That's when a loud bellow comes out of the clearing. The figure charges out to reveal itself to be a huge night howler drugged elephant engulfed in primal rage and savagery

Steven: oh my god! Tantor! Is that you?

All the primal beast do was let out a loud terrifying but stinky roar

Steven: (gags) nope. Defiantly not tantor

The elephant charges but jasper grabs it by the tusks. The beast looks her sternly in the eyes and grabs by with its trunk tossing her aside. The beast let's out a mighty trumpet as it charges at jasper but Steven fends it off. Jasper sees his bravery as he tries to save his sister. She knew she had to help in someway. That's when she looks to the ocean jasper gnawing at the cage it was in

Jasper: it's my only chance

She charges at the cage as Steven it tossed to a corner by the beast

Steven: jasper! What are you doing?!

Jasper: saving my diamond!

She proceeds to force fuse with the giant enraged beast until they both combined into an ugly terrifying misshapen zebra jasper fusion

Steven: jasper! What are you doing!

Zebra jasper let's out a mighty roar at the elephant who trumpets back. It digs in the ground ready to charge and the primal elephant does the same

The two charge at one another locking horns and tusks against one another. The two clashed through the canyon crashing everything in sight. Finally zebra jasper tosses the Rohan's off a cliff but not before it takes her with it by grabbing her arm with its trunk!

Steven: jasper!

The impact alone poofed the ocean jasper and the primal elephant charges away into the jungle. Steven leaps to jasper who looked just fine and goes up to her

Steven: jasper? Are you okay?

They both look to her left arm and see green splotches cover it up swelling it

Steven: oh no! Jasper your corrupting!

Jasper: go away Steven

Steven: no! I'm not going to leave you here

Jasper's condition worsened as more splotches emerge from he other arm as spikes and horns grow on her

Jasper: please! Just go!

Steven: no! I'm not leaving my sister here to become a monster!

She struggles to keep herself sane as it only worsens

Jasper: everyone left me! Pink diamond left us! Everyone abandoned me after I was left on this planet! I was tuck here ever since because everything I cared about left me forever!

Steven: I'm not leaving you! I'm not like my mom! I'll never stop helping others who need it! And I'll never stop helping you

Jasper chuckles as the splotches and horns reach her neck

Jasper: then you really are different than her-

She groans in pain shoving her face to the ground as the spikes in her back increased and sharpened by themselves. Her feel turned into hooves and her arms turned into claws

Steven: jasper?

She raises her head as she reveals herself now fully transformed into a. Deranged monster

Steven: oh shit!

Jasper now transformed into a primal savage charges at Steven but Steven retaliates by protecting himself with his shield. Jasper reprocess to rip the shield out of his arms and lunge at Steven. But then she gets punched with a knuckle sandwich by some stretched arm. Steven looks and sees the goo jit zu worriers then and there

Steven: blazagon?! Is that you?!

Blazagon: the reunion can happen later. Right now we need to stop this beast!

Steven: okay but be careful! That's my sister!

Tyro: tyranno chomp!

He proceeds to sonic boom bite causing jasper to hit a wall

Gigatusk: rock smash!

He morphs his hand into a wall and causes a rock slide poofing jasper making her retreat to her gemstone

Tyro: so... that's your sister?

Veraps: I don't see any resemblance

Steven: cause she got corrupted saving my life. We need to heal her and the ocean jasper
____
Steven returns to safe haven to his special healing pool as he heals ocean jasper first as she returns to her normal form minus her new horns

Then off to jasper

Steven: please let this work

She dunks her gemstone into the water and the powers did the rest as jasper was now healed up but kept her corrupted scars

Braxor: okay now I see a resemblance, but.... how does she pick her nose?

Tritops: hey! We're twinsies now!

Jasper: what the?!

Blazagon; it's alright! We're not going to hurt you. We're your brothers new friends

Jasper: you... poofed me

Steven: it was the only way to help you

Jasper: thank you
_____
Meanwhile smaug sees that things worked a bit to perfection

Smaug: where's that shredz? He was supposed to be there to kill Those goo jit zu heroes

???: my apologies master

On cue shredz comes

Shredz: I have been... busy as of late. I've acquired the bones from the most fearsome dinosaurs that ever ruled ancient earth. And with the remains of the asteroid that gave me my goo power, well have the mightiest dino-goo army to help us take earth back from the hairless apes, and reclaim it to its rightful rulers. Us

Smaug: good for you. That's why I shall make you my general of our new army

Shredz: my wish is but to serve your every whim, master

He bows down to the dragon who cackles in Delight knowing his plan was slowly taking shape