A/N: I really thought I wouldn't make this monday but wheee here it is! Hope you like.

Thanks to antepathy for beta.

WARNINGS: Violence and death

SG Cybertron

Jazz rolled out of his fall as he was thrust from the event horizon of the space bridge. He clutched his chest just once feeling the slight pang and flutter from his earlier injuries. This was no time to be taking it easy, he had a mission to accomplish and no injury short of death was going to stop him. And he did not intend to die today.

Cybertron looked eerily familiar, almost as if everything was where they'd left it before they'd left for Earth. He slipped discreetly into the crowds of civilians, his colour and symbol, despite the different colour helped him to go more or less unnoticed in the Autobot city. His visor darkened when he caught sight of the grand palace and transforming he raced towards it.

Unsurprisingly, given how arrogant the Autobots of this universe were, the palace was unguarded. Jazz made his way through the main courtyard and headed to the back. He rapped on the wall lightly as he went until a hollow sound rang out. Smirking, he dug his fingers beneath the heavy metal panel and with one last look around him, he slipped into the small, dark tunnel.

He could he voices in the distance as he crept through the wall space. Where would Prowl and Sunstreaker be held? Well if Prime had headed off to fight his Prime he would start at the top and work his way down.

It was sometime later that he made it to Prime's private quarters and office. It shouldn't have taken him as long as it did but due to his strenuous activities during the battle, his spark was now causing him problems. It fluttered and lurched in his spark chamber, gritting his denta Jazz pushed the pain aside and dismissed the alerts flashing across his HUD.

The snarl of a voice reached his audio, a voice that sounded all too familiar. Crawling a little further he paused near to a vent and waited. Peering through the small gaps his spark jumped at the familiar black and white frame of Prowl. He was stood by Prime's desk, clearly under some sort of influence from the darker version of himself.

Repressing a growl, Jazz drew himself to his feet, ready to leap out and kill Prowl's captor. His spark chose that moment to send a shooting pain through his chest making him hiss audibly. He froze, his intakes stalling as the voice stopped. Tensing, he winced when the panel hiding him from view was suddenly ripped away from the wall. He gasped with relief when his visor met the hard blue optics of his Prowl and he couldn't help the small grin that spread across his face.

"Hey Prowler, miss me?"

His grin faltered when Prowl didn't respond and simply scowled at him, his face a picture of disdain. In one smooth move and quite unexpectedly Jazz found himself hauled from his spot and thrown bodily onto the floor. He peered up at the black and white mech frowning in confusion. "Prowl it's me…ooff!"

Jazz wheezed and bit back a yelp of pain as he was viciously kicked in his midriff. He growled as he felt something pop in his chest and soon after spat out energon onto the floor. He didn't have chance to reach out to the mech who he knew was his friend before Prowl's hard fist smashed into his helm, cracking his visor sending him into a dizzy black haze of pain and confusion.

He lay on the floor, barely conscious. Then he heard that voice again, undoubtedly the other Prowl as his Prowl would never speak with such venom in his tone.

"He's almost as pathetic as my Jazz." Came the amused leer. "Right slave, he'll be here soon, you know what to do."

Slave. That was it, that was why Prowl had attacked him. Jazz was both relieved and deeply concerned by that revelation. How had they managed to enslave a free 'bot, there had to be something else controlling him, making him aggressive. Jazz turned his head optics just visible through his broken visor. He could make out the white feet of his Prowl and could sense the other Prowl to the side of him.

"You won't get away with this." Came the quiet, steady voice. Just the sound of Prowl's voice eased the ache in Jazz's chest somewhat. The relief at finding him alive, outweighing the seriousness of his current predicament.

"And who's going to stop me?" The other Prowl let out a short dark chilling laugh. "You? Slave you are in no position to even help yourself. I've already won. Prime is going to seal his own fate."

"There will be no sealing of any fate but yours, Prowl."

Jazz managed to turn onto his side catching the formidable sight of the alternate Prime as his baritone filled the room.

"Step aside slave, your master's time is done."

Jazz watched as the Prowl he knew stepped to the side only to gasp in surprise when black hands suddenly yanked him behind the desk. He found himself face to face with the darker Prowl and struggled vehemently to escape his grasp. He frowned when the black and chrome mech simply restrained him and took his rifle from subspace.

"What the…?"

His optics met the alternate Prowl's and he scowled as the other mech stared at him in shock. Black fingers traced a line down his faceplates. Turning his head sharply from the touch Jazz snarled at the mech. "Get yer filthy hands off me!"

Prowl recoiled and his optics moved over his own frame, his door wings flattened as Prime's voice boomed out once more.

"You think that desk is going to keep me from getting to you, Prowl. You maybe a great tactical mind, but no matter what you've got planned, your spark is going to be crushed by the end of it."

Jazz frowned in confusion as the black and chrome mech shot him a small, almost imperceptible smile. He watched as the mech snatched his weapon before he could make a grab for it.

Prowl bolted forward over the desk, with his battle computer now reactivated and the slave program broken, even his captor didn't know what was about to hit him.

Prowl opened fire, taking Prime by surprise and launched himself over the desk. Jazz flinched as he watched the dark mech take off over the hard desk. He could only make out the chaotic sound of fighting between the two mechs. Taking the chance, Jazz forced himself to move and pulled himself up using the desk. He grabbed Prowl's white arm and hissed in his audio.

"Let's get out of here while we can…"

Jazz gripped onto Prowl's arm as the 'bot turned to glare at him, not quite believing the words that came next from the mech's vocaliser.

"Primus don't you ever die?"

Jazz gaped as the black and white grabbed his throat, spun round and slammed him face first to the desk, pinning him beneath his larger bulk. "Prowl… it's me… fight it, yer not a slave."

Banging and hollering filtered into Jazz's audio just before the doors to Prime's quarters burst open. He stared in shock as Thundercracker and who could only be Ratchet filed swiftly into the room. His optics flicked over to where the darker Prowl was now pinned against the wall by Prime, futilely trying to block his helm from the solid blows raining down from Prime's fist.

Distracted Prime didn't notice Ratchet get up behind him. Jazz stared up at the black and white pinning him to the desk as a lowly growl escaped his vocaliser.

"One way or another Prime, doesn't matter who finishes it off." The door winged mech bristled with tension as he spoke quietly.

Jazz yelped as he was grabbed roughly and pulled flush to Prowl's frame, the mech had him by the throat and his arms were held tightly behind his back. "Prowl what are ya doin'? It's me mech… fight it…"

"I am… fighting it, Jazz."

Jazz struggled feebly in Prowl's grasp. He could only watch the scene unfold before him as he was slowly dragged towards the door.

Ratchet was flung solidly against the bulkhead, slumping to the ground as Prime pulled out the sharp needle from his main energon line. He snarled at the medic and swiped at him wildly, his optics flickering as whatever Ratchet had injected into him started to have an effect. He stumbled and released his grip on the darker Prowl, who took hold of the opportunity with both hands.

Prime roared as the smaller door winged mech leapt onto his back and proceeded to rip out his energon line with his bare hands. Ratchet gave a growl of victory as Prime slowly fell to his knees, falling face first to the floor into a growing pool of his own energon. Jazz just stared at the mech standing over Prime, his black and chrome frame stained with blue/purple energon, his intakes heaving.

"Well slag." Prowl uttered behind him, still gripping onto Jazz's throat painfully.

Jazz shook his head, staving off the surreal reality of the situation and trying desperately to ignore the frantic warning pings from his ruptured spark chamber. "Prowl we gotta go… now."

He felt himself being tugged sharply towards the exit, his visor still locked onto the other Prowl as he dove for Jazz's abandoned rifle. Jazz's intakes stalled as the muzzle was aimed directly at him. He met the mech's cold optics with a defiant glare, ready to take any shot as long as it meant his Prowl could escape. He off lined his optics the moment the shot rang out and felt the vice like grip around him suddenly release. A cold feeling of dread crept over his circuits as he turned slowly round to stare at the black and white frame greying on the floor, a hole right smack in the centre of his forehead.

The dread was quickly replaced by the white fury of grief, he whirled around and raced straight for the black and chrome mech barely registering the mech's optics brightening in surprise. His rage was fuelled by his blind grief at Prowl's death and he didn't even register Ratchet and Thundercracker yelling at him to stop.

Prowl defended himself as best as he was able, he knew Jazz was injured but if he wasn't stopped then Jazz would not cease his attack until he was dead. He calculated the maximum force he could use that wouldn't damage Jazz further and would merely cause him pain, as much as he hated doing so. He slammed his fist into Jazz's face, sending the mech careening backward.

Jazz stumbled and fell to the floor crying out in pain as he clutched at his chest. Prowl's intakes hitched and he rushed forward to help, only to stop dead when Jazz swung out the rifle that Prowl had dropped when the visored mech had attacked him.

"This is fer Prowl." Jazz snarled, his normally smooth vocals shaking with rage, hate and grief.

"JAZZ WAIT!" Sunstreaker raced into the room and froze in shock as the shock rang out.

Prowl held Jazz's fierce glare with wide, bright optics. His intakes were sharp and shallow as the shell pierced his armour and burst out from his back plating. "Jazz…" His voice was a whisper and a choke, followed by a static cough of energon that stained his mouth. "It's me…"

Jazz's optics flickered at the words and he caught the mech as he fell into him, the dead weight too much for him to hold and they sank to the floor. He turned the mech onto his back, even now still mindful of the door wings. He stared down into the fading optics and shook his head in shock when Prowl gave him that same, small knowing smile.

"I'm sorry…" Prowl whispered hoarsely. "I shou… should've known you were alive… ever the fighter…." He convulsed sharply, more energon spattering his parted mouth. "…my Jazz…."

"Prowl?" Jazz didn't want to believe it, it couldn't be. "Prowl… that can't be… I shot ya… no… no, no."

Sunstreaker was behind Jazz quickly, his strong hands pulling the mech from Prowl's fatally damaged frame.

"NOOO!"

Ratchet shoved him away and leant over the mech. "Prowl can you hear me?"

"GET AWAY FROM HIM!" Jazz roared, beside himself with guilt, completely grief-stricken he tried to claw his way back to Prowl, only to have Sunstreaker and Thundercracker hold him back.

"I'll melt ya in t' scrap, if ya touch him!"

"Ratchet's helping us Jazz, he's Prowl's last chance, you've got to let him work." Sunstreaker insisted, optics fixed onto the fallen Prowl. He shot a look to Thundercracker who gave an almost imperceptible shake of his head and averted his optics.

"How did this happen?" Jazz grabbed Sunstreaker's collar fairing yanking him close. "How is that Prowl?"

"The other Prowl swapped places with him. Had Ratchet change his paintwork, tried to control us with a slave program. He was bait so Prime would target our Prowl instead of that one." He gestured to the dead black and white on the floor. "He's been trying to overthrow Prime, Prime found out so he used our Prowl." His optics dimmed sadly. "Prowl figured it out, he broke through the slave program, he didn't get chance to tell you before you…."

"Before I shot him…" Jazz let go, defeated. "Let me go, I need t' be near him!" He hissed, his voice filled with pain.

Sunstreaker didn't relent his hold. "Jazz let Ratchet work."

Ratchet cut into Prowl's chest, swearing loudly at the damage from Jazz's shot. "His spark chamber is damaged, beyond repair, there's nothing I can do."

Jazz tore himself from the grip of the two mech's and slid beside Prowl, cradling his frame. "Ya have t' try!"

"Jazz I'm sorry… I can't… his spark chamber won't support his spark…"

Jazz's visor dimmed as he leant over Prowl's cooling body. He felt the warm wet fluid slip down his faceplates and the soft words whispered into his audio.

"It's alright Jazz… it'll be alright… I wish I'd… told you…how…nngaahh!" Prowl gasped sharply and went tense in Jazz's arms.

"Ya can't die Prowl… I promised I'd get ya home…"

"I am home… with you…"

Jazz keened as he felt Prowl go limp in his tight hold, he shook him gently, not willing to let him go. He didn't move until Ratchet gently touched his arm, his optics snapped up to glare at Ratchet and he looked past him to the grey frame of the other Prowl lying behind him on the floor. "Ratchet… use his spark chamber."

"What?"

"The other Prowl's, they're more or less the same right?"

"Their specs are virtually identical."

"Use. His. Spark chamber." Jazz growled.

Ratchet's optics glowed and he moved quickly. Ordering Sunstreaker and Thundercracker to lift the two Prowl's he hoisted Jazz off the floor as he was also now too weak to move, his own spark struggling to maintain his over exerted systems.

"Get them to the med bay…"

Jazz gasped as he was lifted sharply off the floor, his systems slowly shutting down to conserve his own spark. "Ratchet… will he?"

"I don't know, Jazz. I've never had to replace a spark chamber before."

"Ya have t' save him. I know ya can do it, Ratchet….if anyone can, it's you."

Ratchet remained silent as he guided the injured mech to the med bay. Hoping with every fibre of his being that Jazz's confidence in him was well founded.