The large, mutant tortoise, who was once Raph's pet, Spike, but now calling himself Slash, stood above the city on the edge of a rooftop. He quietly watched Raph, Casey and Kris move from alley to alley, looking for the Kraang. They crouched low to make less noise, and made their way up a fire escape to the rooftops. They heard a familiar whir of electronics and peeked over the roof edge to confirm that it was the Kraang below.
"It's the Kraang," Raph stated as he watched several Kraang droids load crates into their van, with a few bots guarding with plasma guns. The three teens leapt down to ground level, out of view of the Kraang, and Casey immediately moved to intercept the Kraang. He was held back by Raph.
"Hold on, hothead," he whispered angrily to his human friend. "Ninjas use stealth. Ever heard of it?" But before they could implement their stealth into action, a large, lumbering figure dropped down from above. The three teens all gasped, staring wide eyed at Slash as he came to full height. "Spike?" Raph spoke, recognizing his old friend.
"Whoa. Is that your old pet turtle? The one who got mutated?" Casey asked, still wide eyed. Kris stared at Raph in confusion, several questions rolling around in his head and knowing this wasn't the time to ask them.
"Yeah," Raph confirmed. "His name was Spike." The memories of when Spike was still an ordinary tortoise played in Raph's mind, followed by the memories of when Slash had tried to eliminate his brothers. His somber expression hinted at the anger he still held from that day.
"It's Slash now, remember?" he reminded them. "Good to see you again, Raphael." He leaned forward, frowning and smiling slyly before continuing, "Miss me?"
"What are you doing here, Slash?" Raph demanded, not backing away from Slash's menacing taunt.
"We're taking care of the Kraang. I got a new partner now," Slash told the three teens as a large explosion rang out, causing them to jump back in surprise. Smoke billowed out of the alley behind Slash.
"Destruction to the Kraang!" the Newtralizer cried after leaping into the middle of a group of Kraang. He was no doubt the source of the bomb. He began firing his plasma gun at the alien robots as they returned fire. Several were taken out quickly, their heads flying off from the shots. The teens peered around the corner to see into the alley and watch the fight.
"So awesome!" Casey commented, much to Raph's annoyance. The Newtralizer picked up a disguised Kraang droid, known as Normans, and tossed him into another. "Who is that?" Casey asked as he leaned into the alley to get a better view of the epic battle, but was pulled back by Raph to avoid getting hit by a plasma discharge.
"An alien psycho called the Newtralizer," Raph replied angrily before turning back to Slash, just as steamed at him as he was annoyed with Casey. "What are you guys doing, Slash?"
"What you turtles couldn't," Slash told him as he lifted his large mace weapon over his soldier with pride. "Wiping out the Kraang. Keep out of the way!" Slash ran into the alley, swinging his weapon around to send several Kraang droids flying.
"You had a pet turtle?" Kris asked Raph. His tone suggested he was weirded out by this fact, since Raph was a turtle himself. Raph's expression of annoyance grew more intense.
Newtralizer leapt onto the turned over Kraang van and forced open the doors before crawling inside, looking for something he knew the Kraang had.
Raph stared after his former pet with distaste for his actions, and his company. Raph's hand still rested on Casey's shoulder as he began to tell him and Kris the plan, "all right, Kris and I'll take Slash and Newtralizer, while you hang back and get-." Raph stopped talking abruptly when he felt Casey pull away and saw him circle around towards the chaos. "Awe, Casey!" Raph cried. Casey rolled towards the Newtralizer on his skates, wielding his hockey stick above his head as he called
"Goongala!" He brought the stick down, attacking the alien newt's tail. The Newtralizer didn't flinch, or even bother to look at Casey as he swung his tail to knock Casey on his back. He landed on the road in front of an oncoming vehicle.
"Look out!" Raph shouted, diving into the road to move his friend out of danger. The car's tires screeched as the driver hit the brakes and swerved to avoid the teens. Kris flew into the air to avoid getting hit by the car himself, and floated down next to Raph and Casey.
"Yeah, thanks for the help, Krispie," Raph huffed.
"Well, sorry my ninja reflexes aren't as fast as yours," Kris replied with a shrug.
"You have ninja reflexes?" Casey asked, missing his sarcasm.
"No, Casey," Kris told him with a dull stare.
Newtralizer was still shifting through the Kraangs belongings in the side turned van. He lifted aside a few alien boxes, until he found the one he needed. "Just what I was looking for," he said after lifting its lid. Inside the box was several, miniature devices, no larger than a watch face, that all had the Kraang's signature purple-pinkish glow. Newtralizer plugged one of them into his wrist armour, before reaching for his belt. "And now the plutonium," he spoke, removing the mentioned chemical and injecting it into the device now attached to his wrist. He turned and exited the van, calling to his partner as he did, "Slash, we have what we came for." Slash turned and caught one of the devices that Newtralizer had tossed towards him. He opened his hand to look at it, slightly confused that all the trouble they had caused was over something so small.
Raph had finally gathered himself after he and Casey had taken that tumble across the road. He turned back to Slash and charged him with his sai spinning it his hand. Slash saw him coming and swung his spiked mace at the attacking turtle. Raph reacted on reflex, ducking and rolling underneath the large weapon. Slash turned to face Raph and attempt another swing, but Raph was faster and bounced off Slash's shell to his other side. Slash spun again to face his opponent, and after a short pause raised his mace to bring it down on Raph. Raph retaliated by thrusting his sai up at the descending weapon, locking it in place as the two struggled to gain the upper hand. Kris and Casey stood at the sidelines, watching the fight between the two turtles without knowing how to intervene.
"Yo, power boy," Casey said, roughly nudging Kris's arm. "Why don't you do something?"
"Because my powers ain't exactly good for offense," Kris retaliated, gesturing wildly at the two fighters. "What'm I gonna do? Fly around 'em 'til he's dizzy?"
"How about shape shifting into something helpful?" Casey argued back. "Or reading his mind to get his next move?"
Kris paused, staring blankly at Casey, "okay, those are actually pretty good ideas." Casey rolled his eyes.
Back in the fight, Slash had pushed his weapon against Raph's, sliding Raph backwards. "See you got some new partners too, Raphael," Slash stated, before using Raph's own momentum to knock him back on his shell. "A couple a humans? You gonna betray them the way you betrayed me?"
"Not really a human," Kris called from the sidelines, not really being heard by either fighter. Raph got to his feet, clutching his gut where Slash had hit him.
"Still holding onto the past, huh, Spike?" he said between groans. He raised his arm quickly to stop Slash's massive hand from completing its attack.
"I told you, it's Slash now!" he bellowed. He clasped Raph's hand and flung him towards a wall. Kris quickly shifted into a large bear and leapt behind Raph. Together they crashed into the wall, with Kris cushioning the force for Raph only slightly.
The Newtralizer walked up beside Slash, not bothered by the others' presence. He raised his wrist and activated the device he had taken from the Kraang. It began to make a strange noise before Newtralizer disappeared. Raph lifted himself off the ground as much as he could, looking up at Slash as Kris shifted back to his human form and groaned while holding his gut. Casey cried out as he charged the towering turtle mutant from behind. But Slash activated his device like Newtralizer had before, and he, too, disappeared, leaving Casey to strike at empty air and go tumbling into Raph and Kris. They all stood, holding their injuries, while groans of pain escaped them. Raph looked around at the level of destruction that was left by the alien-mutant duo. "I think we're in deep trouble," he said.