"This better be good, Donnie," Leo told his brother after he had led them to another part of the city. "What are we doing up here?"

"We are gonna listen in on everything Slash and the Newtralizer say," Donnie explained while pulling out his T-phone and activating one of the apps he'd created. "While I was wrestling with Slash, I slipped a spyroach on him. We'll be able to hear everything they say through my T-phone." He gave a chuckle after raising his phone triumphantly in the air. "I know. Awesome, right? I'm smart."

"Nice. And here I thought you were just getting beat up," Raph said with a smile and gave his genius brother a strong pat on the back; a little too strong, since it nearly caused Donnie to fall over the roof's edge. He flailed his arms about to regain his balance.

"Yeah, well, uh, I was multitasking," Don replied, clicking a button on his phone.

...

Slash and Newtralizer stood in their lair checking over their weapons. The spyroach Donnie had planted crawled along Slash's shell, who was still oblivious of the tiny intruder. "The Kraang orb revealed a new weapon," Newtralizer announced, while clicking in a new clip for his gun. "They're testing it on the docks at midnight." He paused to let out an angered growl. "We can use it to wipe out the Kraang once and for all. We can destroy this whole stinkin' city." He raised his arm to show Slash the hologram of the new weapon he was referring to.

"And every innocent human with it!" Slash bellowed, surprise quickly occupying his face. "Are you crazy!? I'm here to take out Kraang. Not. People." Slash spoke sternly and furiously.

"Why should I care? I'm not people," Newtralizer asked with an irritated tone, as the turtles watched the feed through Don's phone.

"Hmm. Sounds oddly familiar," Mikey commented as he tapped his chin and looked to the sky. He shifted his eyes to look at Raph dramatically, so his hotheaded brother wouldn't mistake that he was talking about him. Raph scrunched his shoulders and growled, not appreciating Mikey's pestering.

"If it comes down to it, I won't take any chances, brother," Newtralizer continued. Don clicked the phone off, having heard enough.

"Okay. This just got real," Leo spoke with determination as his brothers pulled out their weapons and Kris flew into the space above them.

"Let's end this," Raph said while spinning his duel sai.

...

Midnight arrived and the teen heroes were hiding among the crates at the docks, waiting for Slash and the Newtralizer to show up. They silently moved as a group towards the Kraang testing area, with Leo raising a hand to still his brothers and Kris when they arrived. They watched as three Kraang moved towards each other and stood facing the others. One of them pulled out a palm sized, triangular device and the other two grabbed the remaining corners. They stepped backwards, away from each other, as the device separated as well. It opened up into a portal leading back to the Kraang's home dimension; Dimension X.

"Is that the new weapon they were talking about?" Mikey asked as the large, robotic figure rose up from the portal. The device was spherical and the size of a small car, in both diameter and height. "Awww, doesn't look like much," he whined. The weapon then began to extend upward on two, long legs. It rose a few stories into the air, and towered over the turtles and Kris, who were already standing on one of the crates at the dock. They began to tremble and huddle together as they watched the device reach its full height. "Nevermind," Mikey said.

"Have you seriously not learned never to say things like that, Mikey?" Kris asked rhetorically, just as afraid as the others. The device's top split and rose up, revealing blasters and a place for the Kraang to sit at the controls. There were three blasters that rotated around the perimeter seamlessly, and the Kraang inside smiled with glee, itching to test them out.

"Kraang, over here," one Kraang on the ground spoke to the one in the device. "Move in the direction known as this way." The Kraang on the ground stood beside the designated target crate and motioned for the attention of the Kraang inside the weapon.

"Kraang targeting target," he announced. A purple beam that resembled electricity shot out from one of the blasters and lit up the docks and water around them. It only took a few seconds for the crate to go up in a large explosion, exceeding the height of the weapon itself. The Kraang who had been standing by the target suddenly found his robotic body dismembered, and completely without its upper body. Now only a pair of legs, the robotics began to fail and the Kraang fell to the ground, still startled by the outcome. But it quickly recovered, giving a pleasing squeal and a tentacle "thumbs up" to the others, who cheered in response.

"That is what is known as awesome," another Kraang said, giving a small, stiff fist pump. The group of aliens turned to the weapon and wiggled their fingers in salute.

Newtralizer moved behind the weapon, with Slash nearby him. He peered around the side of a crate to get a look at the weapon. "Raka raka roka raka!" he growled before turning to his partner. "So here's the plan. You distract the Kraang. I'll hijack the walker."

"And I'm supposed to trust you inside that thing?" Slash demanded, nearly cutting off Newtralizer's instruction.

"I know how to pilot it," Newtralizer told him curtly. He then pointed a sharp finger at Slash. "And you don't have a choice." He turned from his partner and climbed over the crate. Slash stared after him in disbelief, before frowning and emitting a disapproving grow.

"Here's the plan," Leo began, but before he could finish, Newtralizer teleported himself on top of the walker. The Kraang inside quickly spotted him and activated the defense mechanisms located on the top surface. An object that resembled a satellite dish rose from the surface and shot a bolt of electricity at the Newtralizer. He seized a moment, before losing his balance and sliding off the walker. The walker raised its foot in attempt to stomp on the alien newt, but he summersaulted out of the way and bounced back to his feet. Then the others began firing their weapons at him. Newtralizer crouched and bounded from side to side, avoiding the lasers, as Slash came in and took out the Kraang droids with his mace.

"Slash, keep the Kraang busy. I'm going for the walker," Newtralizer ordered. Slash ran towards the Kraang, taking them out with his mace one by one.

"Kraang, attack all non-Kraang," one of them ordered. "Repeat. Attack-" He was cut off when Slash smashed another Kraang droid, stole its gun and blasted the other two with it. The turtle brothers and Kris had now joined the fight. Leo sliced down three Kraang droids in a matter of seconds, causing the Kraang inside to fall out and scurry away on their tentacles. Raph went for Newtralizer, spinning his duel sai and crying out angrily. He leapt at the alien newt and was swiped away by his tail. Newtralizer continued the motion to face towards Raph and raised his arm to shoot his laser weapon at the turtle. Raph dodged and blocked the shots as they rocketed towards him dozens per second. And when there was a pause, Raph took his chance to charge at Newtralizer again. He swung his arm at the alien's side with sai in hand. But Newtralizer dodged it by sidestepping just out of Raph's reach, and was able to counter Raph's attack, aiming a strike at his shell with his blade. But Raph was quick enough to avoid his attack as well. Newtralizer wasted no time in trying again, and this time Raph blocked it with his sai. He pushed the Newtralizer back and swung his sai at his head, just missing as Newtralizer ducked. The two continued to face off with each other as the walker attempted to shoot them with its alien laser. The Newtralizer pocketed his small blade before grabbing Raph's shoulders. He flipped over him, using the momentum to send Raph soaring. The Newtralizer stopped, and looked up at the Walker. It turned, adjusting its targeting system, and sent a blast towards him. He quickly bounced out of the way and began climbing the nearest crate. The Kraang inside the Walker was laughing maniacally as he blasted at their enemies.

"Kraang, watch out for Kraang," a Kraang called out after nearly being hit by a blast from the Walker.

Kris flew around the Kraang-droids, distracting them and causing them to accidently shoot each other as he moved too quickly to be an accurate target. The Kraang managed to surround the flying boy, pointing their weapons at him. He could have flown up, causing them to once again take each other out with their own lasers, but he decided to have some fun instead. Turning into a giant octopus, Kris attacked the Kraang with his multiple tentacles, clanging them together and tossing them into the air.