2 Days Later

"Is everyone in position?" Leo asked the team over their T-phone Comm. system.
All eight teens were paired off and separated, getting ready to perform the plan they had been putting together for a couple days. Between movies, meals and a bit of goofing off, the teens had finally managed to come up with a suitable and supposedly fool proof plan.
"Orange and red are putting it to bed," Mikey answered their leader with a giggle. A solid smack to the back of Mikey's head could be heard over the T-phone comm. system following Mikey's comment.
"We're good to go over here, Leo," Raph came across the comm., being Mikey's partner for the mission. "We made this part of the sewer look like something big's been sleeping here."
"Excellent," Leo told him. "April? Casey?"
"We are in position, and waiting on standby," April confirmed.
"I'm all set to go, too, Leo," Kaitlyn came on the comm. before Leo could ask.
"Same here," Kris added. "Staying out of sight until I'm up."
"Perfect," Leo said. "Don and I have the stuff, and are heading over to Raph and Mikey now. We'll let you know when we get there."

...

April and Casey had done a sweep of the sewer earlier looking for the Monster Hunter, but all they were able to find was a few of her traps. They decided these would do just as well to lure her to where they wanted, and waited for Leo's signal. When he announced over the comm. that they could proceed, Casey tripped one of the silent alarms on the trap. They waited for a moment until they could hear loud footprints splashing in the distance, but quickly getting closer. The two teens swiftly moved around the corner heading in the opposite direction, their own splashing footprints hidden by the sound of the approaching hunter. They kept their distance from where they knew the hunter would be, but remained within earshot. The splashing stopped, and the teens heard Dr. Finn mumble something, unable to make out exactly what she'd said. April turned to Casey, the question of "are you ready" playing in her eyes. Casey nodded, and April prayed that the hunter would react the way they predicted.
"I can't believe you got us lost!" April said loudly, pretending to be mad at Casey.
"We're not lost!" he said back, adding to the act. "I'm telling you, something big has been sleeping down here, just a few tunnels this way. It has to be the monster."
April sighed, taking out her T-phone. She used the screen's reflective surface to check what was behind them, while pretending to look at information stored on her phone. She saw Abigail Finn peaking around the corner, watching them. April couldn't help the quick smile that passed over her lips as she pocketed her phone and winked at Casey, letting him know the plan was working.
"Alright, Jones. But you better be right," she told him, beginning to walk down another tunnel. The teens led the hunter through the sewer tunnels until they reached the area Raph and Mikey had set up, keeping in mind just how far behind the hunter was. The fake sleeping area consisted of leaves and grass, taken from the forest above, placed messily along one of the dryer sewer ledges. There was a large imprint in the center, as if something had lied down in it and flattened the organic matter. There were also partially eaten apples and a few crushed berries strewn around the sewer floor.
April nodded up to the turtle brothers who were hiding among the shadows on the ceiling, using shuko spikes to stick to the walls. They nodded back before Leo and Don leaded down. Don quickly raised the device he held and hit a button, resulting in a deafening roar. April screamed as Casey called out to her, all part of the plan. Leo made a few, quick claw marks along the walls before rushing off towards Kris. April sat against one of the sewer walls, Casey coming by her side, as Abigail turned the corner to see. April began to shake from fake trauma as Casey held her shoulders.
"Foolish children. This is why you don't get involved in hunts too big for you to handle," Abigail scoffed.
"It's too big for you, too," Casey shot back. "Just walk away, Finn."
Another loud roar was heard in the distance. "I never abandon a hunt!" she cried, charging after the noise. When she was out of sight April and Casey stood, dropping their act. Raph and Mikey dropped down beside them as April once again took out her T-phone.
"The hunter is in pursuit, as planned," she told Leo over the comm.
"Great," Leo responded. "You four follow behind as backup, but not too close. We don't want to blow our cover."
"Got it."
The four teens ran off, following Leo's instruction.

Abigail Finn ran after the continuous roars of the monster and the trail of claw incisions it left in the wall. She held her multipurpose hunting gun at the ready. The monster was fast and she was having trouble staying a close distance behind it. Abigail brought up her map, that she had been making the past couple days while searching the sewer to ensure she had covered the entire area. She smiled deviously when she confirmed her déjà vu and realized that this tunnel the monster was leading her through came to a dead end. She had him.

Leo and Don kept their pace, making certain the hunter could still follow, but giving them enough space to do what they needed to.
"Kris, we're coming up on you. Do you have the right form?" Leo asked him through the comm.
"Monster-fied and ready to go," Kris replied.
"Roger that," Leo said.
"You did not just say that," Don sighed, as he let off another roar from his device.
"It's something I've always wanted to say. Like a movie hero," Leo explained. Don rolled his eyes with a smile, finding his older brother's obsession with being a hero amusing. They continued down the curving tunnel a few moments longer. They turned the final corner and came face to face with the monster Don had designed for the plan, knowing it was Kris. He looked almost like a giant, furry alligator. He stood on his stubby, hind legs, hunched over as his long, muscular arms hung in front of him. Long claws protruded from his fingers, similar to what a male red eared slider turtle would have. He had a double set of horns on his head, one right behind the other, not too large, but enough to be seen. Bore-like ears drooped by the side of his face and beady, black eyes looked to the world around him. His mouth hung slightly open, hints of the multiple, sharp teeth it held. His nose could not be seen through the thick green fur that covered his entire body, only becoming thin on his chest and stomach. Finally, a large tail dragged behind him.
Leo nodded to Kris before he had Donnie leaped up into the shadows on the ceiling to hide. Kris turned to the dead end wall and began furiously scratching it as he waited for the hunter to catch up. It wasn't long before Abigail splashed around the corner and took in the sight before her. Kris turned and let out a deafening roar, raising his arms in the air. Abigail, realizing her gun was on a setting too weak for a monster this size, lowered her weapon to adjust it. She barely managed to duck and roll to one side to avoid Kris's attack, as he slammed his claws into the ground where she had been standing. He yanked them out and brought them back around towards the hunter in a sweeping motion. This time he managed to knock the gun from her hand. Parker had heard the commotion earlier over their comm. and sent out back up sorties that were just arriving now. They circled Kris and he smashed a few into the sewer walls. Abigail stumbled after her gun while he was busy. She spun around with her weapon, firing off a large object that dug into two upper corners of the tunnel. It dropped down, unravelling to reveal a net wall that would tangle the monster if he tried to get away. One of the sorties sent a burst of electricity into Kris's back, too fast to get smacked down first. Kris arced in pain, making sure he still kept enough focus to not lose his monster form, and spun around to stab his claws through the sorties' center. He struck it against the wall, shattering it to pieces. Abigail then turned to the monster and joined the other three sorties in shocking the creature. Kris flailed his arms about, letting out numerous roars. Some of his random flailing managed to knock a few of the other sorties out of the air, but Abigail was still standing and easily avoiding his panicked thrashing. She moved around to his other side, putting him between herself and the net wall. She continued to use the electric shocks to send him closer to the netting. It began to work as Kris inched back towards the net. He howled with every shock, and was starting to lose energy. His chest rose and fell with heavy breathing and he reached out for something he could use to balance himself. He grabbed onto the netting, and tried to use it to steady his footing, but the laches keeping the net attached to the wall released as soon as Kris put pressure on them. He began to fall as the net wrapped around him, trapping his arms against his chest and side. He hit the ground with a grunt and immediately tried to squirm his way free. Abigail approached him, aiming the gun point blank at his chest. Kris stopped moving, pretending he had just lost consciousness. The slow rise and fall of his breathing the only evidence he was still alive. Abigail was finally able to grab her breath and admire the creature she had bested.
"Marvellous," she muttered, wide eyed. Just then she realized that Parker had been trying to get her to respond, probably for the entire take down of the monster.
"Boss! Are you there?" he called out.
"Yes! Sorry, Parker, I'm here," she replied.
"What happened? All I had was audio."
"I did it, Parker! I caught the creature! Send down some sorties to bring it to the van. Lots of them," she lowered her weapon, and continued to admire the creature. This was quite the marvel of nature, and she had been lucky enough to capture it, so that she could share it with the world. Her mind brought up some memories of when she had been laughed at for believing such creatures could exist. Her theories had been shoved aside, seen only as ramblings of a mad person. And soon no one would even take her appointments once her reputation among the scientific community began to precede her. She had become an annoyance that no one wanted to deal with. But now that would all change. She would get the last laugh as she called out all those scientists who refused to believe her and show them just how wrong they were.
"You're the solution to all my problems," she told the monster, with an overly giddy tone. "Finally, I'll be able to silence their laughter."