Mutagen Madness

A/N: Hello! I know I'm currently writing another story, but my inspiration for it is running dry, and I've read a few things about Shredder wanting to cure Karai so badly that he kidnaps Donnie to get him to cure her. Now, I don't know if that's going to happen, but since I wasn't all that glad with my 'Mutagen Madness' story I decided to make a new one, while I try to finish my 'Monster story', which I intend on finishing as soon as possible.

Anyway, hope you like this first chapter and please review, favorite and follow.

Chapter 1, Cure Chaos!

(Normal P.O.V)

Shredder walked into Baxter Stockman's lab with his patience dangerously thin. He had ordered Baxter to come up with a cure for Karai's mutation, but so far he only had received failure after failure. He saw the fly quiver when he saw that his master was approaching him and silently smirked at that.

"Stockman, I ordered you to make me a cure for Karai. And so far you have given me nothing but failed experiments. My patience is wearing thin." Tiger Claw, who had accompanied Shredder to Stockman's lab growled lightly, but Shredder had told him not to do anything without his consent. Stockman had flown up from his desk and had his hand and claw in front of him.

"Pleas-z-z-e mas-z-z-ter, I can come up with a cure. I just need more time, that's-z-z all I ask for." Shredder slammed his fist on the table so hard that beakers and papers fell to the floor.

"No more time! I have waited long enough for you to find a cure, your time is up!" Tiger Claw chuckled evilly at the poor fly, and stepped forward and growled slightly. And he had a smirk on his face that said 'why bother trying to make something, when your brain is as effective as a pile of dung?'

Baxter was down on his knees and held his head with both hand and claw and tried to think of something that could save him, and then thought of something, when he kidnapped that O'Neil girl a few months back she had mentioned that one of the turtles could make retromutagen. That may be enough information to spare his life. He raised his hand and claw pleadingly.

"Please mas-z-z-ter, I know a way to find a cure for Karai! Just let me z-z-speak." Shredder, who had raised his arm to cut his claws through the fly's neck, slowly lowered his arm again and silently gave permission to speak. Baxter cleared his throat and started talking.

"A few months-z-z back the turtles-z-z created a retromutagen for their friend's-z-z father. I tried to grab it, but it got smashed and destroyed. But I know that the turtle Donatello knows-z-z how to make more." Shredder didn't say anything at first, but he thought the words over in interest and a little frustration.

'The turtle knows how to make a cure for my daughter? Why hadn't anyone told me about this before? How dare he not tell me something like this?! Oh well, I will deal with him later, right now I will take action.' He thought and turned back to Stockman.

"I shall deal with you later Stockman." He turned to Tiger Claw, who bowed down in respect waiting for orders.

"What are your orders, Master?" Shredder thought over his options, then gave his answer.

"Go to the Kraang, and tell them to use their technology to find the turtles. And when they do, tell them to open a portal to wherever it is and attack. Do what you will with the other turtles, but bring back the smart one, alive and unharmed. Is that understood?" Tiger Claw bowed his head and left them lab and pulled out a small communicator out of his pocket and contacted the Kraang.

"Shredder orders that you start using whatever technology you need to find the turtles. And when you do, you prepare a portal to go to that place."

When he arrived at the Kraang lab, he saw that most of the Kraang were working at computers and he walked up to one of the Kraang-droids, who looked up from the keyboard and looked at the big tiger. "Any progress?" The Kraang nodded and pointed on a blinking red dot on a map on the screen. "The ones known as the turtles has been located in the places known as North Hampton. Kraang is ready to prepare that which is known as a portal to go to the location the one known as Tiger Claw wants to go to." Tiger Claw smirked evilly and pulled out the communicator again and this time contacted Shredder. "Operation Turtle Grab is ready to go."

*Theme Song Que*

(Donnie's P.O.V)

I sat in my temporary lab and tried to work on a remote that Raph accidentally stepped on this morning when he went down the stairs from the bathroom. How the remote had ended up in the stairs was a bit of a mystery but I had a theory that Mikey had something to do with that. I had come to realize that I had been rather bored lately, cause there was not that many things to do since I usually did what I enjoyed to do in my lab and my real lab was all the way back in New York City so I was rather bored.

Mikey and Raph still broke stuff so I could have something to do in my lab, but I wanted to do more than just fix stuff. There was little to no mutagen here, only one or two canisters in that Kraang ship we found under April's house, but other than that, no mutagen. So I couldn't work on a retromutagen and I had very little supplies for working on the party wagon either so I felt like I had nothing to do. April told me that she was thankful for me fixing stuff up around the place, but I still thought I didn't do very much around here. It also didn't help that Leo had started to think about Karai during his healing process and had started to ponder on making a cure for her. And that meant that he had put a lot of pressure on me lately.

"Donnie?" I turned to the barn door and saw April standing there and she looked a little concerned but she had a small smile on her face. I saw she had dark rings under her eyes and I assumed she wasn't sleeping very well since the 'Mrs O'Neil incident' but I didn't say anything about it.

"Yeah, what is it April?" She walked into the barn and walked up to me. She had one hand on her hip and I saw she struggled to keep her smile on her face, but I could see her smile was a bit forced.

"Lunch will be ready soon, are you coming or do Raph have to bring it out here, again." I blushed slightly at her comment. It wasn't exactly a secret that I could stay in my lab, working for hours without eating. Sometimes my brothers forced me to leave the lab or brought me food. But since I had nothing to do these days I had started to eat more with my family. I smiled at her and stood up.

"Yeah, I'll come with you." When she made no move to come with me and didn't even meet my smile. She looked down on my desk and played a little with my screwdriver. I looked at her and debated whether I should place my hand on her shoulder or if I should keep my hands to myself. I decided to let her decide.

"April, are you, okay?" I walked up her, but I was careful not to get too close. She turned away from me for a second, before she took a breath and turned back to me. Her eyes were a little weepy and she bit her lower lip.

"Yeah, I'm okay. I just... I." Her voice cracked a little and tears slowly began to fall from her eyes. Out of instinct I raised my arm a little and she leaned into my embrace and put her face in the crook of my neck. I heard her cry softly, and I could understand where it came from. It had been a few weeks since we found 'Mrs O'Neil' under April's house and she was still a bit upset over it. I rubbed my hand over her back and leaned my cheek against her head.

"You don't have to say anything, I understand. You're still upset about what happened before." She nodded into my neck and kept on sobbing for a few minutes. When she finally calmed down and pulled away from me I saw her blush a little, or at least I think she did since her face was a little red after crying. I gave her a napkin from the desk and she gratefully took it and dried her eyes. She looked up at me and smiled, and this time her smile was real.

"Thanks Donnie. You're the best." She turned around walked out of the barn. She turned in the door and looked at me over her shoulder.

"You coming?" I nodded and quickly cleaned up on the desk and put my T-phone on the desk and plugged in a charger wire in the bottom of the phone, and then I followed April to the house.

When we got into the house again, April walked up the stairs to the bathroom and clean up a little after her crying. Mikey was in the kitchen and had prepared soup with a little meat and vegetables in it and some sandwiches with cheese on the side. Simple yet very delicious. At least when Mikey did it. Raph had just finished setting the table when I came in and he looked up from his table setting.

"Hey, would you look at that. The genius is out of his turtle cave." I rolled my eyes with a small smirk and sat down at the table beside Raph, who also sat down now. I looked at the door to see if Leo was around but I didn't see him so I leaned closer to Raph so I could whisper at him. I didn't want Leo to get another reason to not talk to me. It was bad enough the way it was now.

"Hey Raph, how's Leo? I mean, about y'know Karai, has he said anything?" Leo had been a little sad and broody the past week and barely said a word to me these days. And when he did it was usually about Karai and retromutagen. Raph shrugged slightly and leaned a little closer to me.

"I don't really know. He's been sitting in front of the fireplace all day and haven't said a word since breakfast. He doesn't show any emotion or anything, he just sits and stares at the fire." I nodded and looked down at the table. Leo had started to get better and and could walk around without a crutch and could fight pretty good now, but he still had sore muscles and he still limped when he walked, though not as bad as before.

"Hope you're hungry bros, cause here you go! Soup à la Mikey!" Mikey poured soup into our bowls and just when he did Casey came in through the doors and was followed by April. April looked a little better now when she had calmed down a little bit more and cleaned up a little.

"Alright, food! I'm starving!" Casey said and sat down beside Raph and April sat down beside him. She didn't say anything but 'thank you' when Mikey poured some soup in her bowl. Leo came a little later and sat down beside Mikey, who sat beside me, and that meant that Leo was sitting in front of me and that felt a little awkward since Leo barely said a word to me anymore.

After Leo came into the kitchen, the kitchen became uncomfortably quiet and no one said anything else than 'can you pass me the salt' or something like that. But after about fifteen minutes Mikey decided he couldn't take it anymore.

"So, uh Donnie, how's it going in the lab? Have you fixed the remote yet?" It wasn't best topic to start a conversation with but he he was trying but before I could answer, Leo looked up from his bowl and looked a little annoyed.

"Yeah, have you fixed the remote? Then maybe you can start to do some real work around here." I knew Leo was just being broody and a downer but that didn't mean that I would take the dirt he threw at me. I put my spoon back in my bowl again and looked straight in the eyes.

"And what is that supposed to mean? Are you saying I'm doing nothing around here?" Leo looked into my eyes and I could see he was moody and a little annoyed. His mouth was a thin line in his face as he sucked in his lips before he answered.

"I'm saying that if you would stop working repairing stuff or fixing what's broken around here, maybe you could do something more meaningful around here! Like maybe, oh I don't know, a retromutagen for Karai?!" I felt anger starting to boil up in me and I stood up from my chair and put my hands on the table and leaned over the table towards Leo, and he mirrored the action.

"Leo, there was very little mutagen in that Kraang ship under April's house, and with the few things I brought from the lab I can, at the moment, not make a retromutagen! Can't you see I'm working on that stupid retromutagen as fast as I can? You just have be a bit patient!" Leo leaned closer to my face and was close to yelling now.

"Well if you had used that first batch you made on April's father and not let Storkfly ruin it and then waste that second batch you had on her father, we wouldn't have this argument!" Dead silence followed after Leo said that, and the only thing that was heard was the scraping of a chair being pushed backwards as April stood up from the table and ran out of the kitchen and up to the second floor. Casey gave Leo a dirty look and then stood up and ran after April. I just stared at my older brother and so called 'noble leader' and felt both angry and sad at the same time.

"Leo! Not cool bro, you know April's been sensitive about her 'mother' being a Kraang monster, she doesn't need anyone making it worse! If you want to yell at me, fine, but leave Kirby and April out of it!" And with that I walked out of the kitchen, opened the front door stepped out and slammed it shut.

I walked out into the woods to calm down by taking a walk and take in the beautiful nature and the calmness of the forest. I took deep breaths and tried to calm down but I was too angry at the moment. So after a bit of walking I sat down on a rock at a small stream.

(Leo's P.O.V)

After Donnie left the house and slammed the door after him I looked at both Raph and Mikey, who were the only ones left. Raph looked really pissed off and without a single word he stood up and walked out of the kitchen and also walked out of the house and was soon followed by Mikey who just said 'not cool bro' and he followed Raph outside the house, leaving me alone in the kitchen.

"B-but I- I..." I couldn't say anything to anyone right now. Not that anyone would want to listen to me anyway. I stood up and gathered up all the dishes and put them in the sink for now, before I also left the house. I walked into the forest and thought over what I said and did back in the kitchen. I guess I had thought too much about Karai the past few weeks and I admit that I had been rather pushy. I knew we didn't have an unlimited supply of mutagen and also knew Donnie's temporary lab didn't have that much equipment either, so why was I so pushy?

I sighed at sat down against a tree and tried to meditate a little, but every single time I was close to empty my mind, Donnie's words or my words came into my mind, or April's face when I said we wasted Donnie's retromutagen on her father. I groaned and leaned my head against the tree and took a deep breath through my nose and tried to calm down.

"Huh, some leader I turned out to be. Can't even keep the team together for a few weeks. And I'm not a very good brother either." I sighed loudly and put my cheek in my hand and rested my elbow on my knee. I looked around the forest and I heard a little rustle and looked up at a branch over my head to the right and I saw two young squirrels running over the branch and then one of them jumped to another branch.

But the other one of the squirrels, who was a little smaller than the other, had a little trouble getting over. He was scared of jumping, and the other one saw that and jumped back to his friend and chattered encouragingly at his friend. He puffed his friend in the side to make him move forward, and when his friends still was too scared to jump, his bigger friend crawled in under his small friend and carried him on his back and jumped over the branch again.

I smiled at the scene but at the same time he felt a little sad. He should've done the same and helped Donnie and support him instead of pushing him.

My thoughts got interrupted when I heard a scream in the distance and I recognized the scream right away.

"Donnie." I got up from the ground and started to look around the forest and tried to figure out from what direction the scream came from, but then I heard rustling in the bushes only a few feet away from me. I pulled out one of my katanas and prepared myself to fight if I had to.

(Donnie's P.O.V)

As I watched the water flow through the stream I felt my anger and annoyance fade away slowly and I felt calmer too. I had started to think about how Leo was doing. He couldn't feel very good right now. He had been 'out of commission' for a very long time and hadn't been able to train for quite some time, so who could blame him for being stressed, upset and broody or anything else? I guess I should try to be a little patient with him.

Suddenly I heard some electronic buzzing behind me and I flew up from the rock and placed my hand on my staff, ready to pull it out if I had to. But what I saw almost made me lose focus, cause a big purple/pink triangle had appeared right out of nowhere and out came at least fifteen foot-bots, ready to fight.

"Foot-bots?!" I pulled out my staff and started to fight against the ninja robots. I sliced one robot in two to my left, and kicked on robot in the head to my right and threw one robot into a tree over there and kicked another robot into the water over there, making it short-circuit. One robot tried to sneak up on me from behind, but I gave him roundhouse kick in the neck, making his head fall off.

But I soon realized that once I had fought off one robot, ten new ones came through the portal immediately. I decided I had to retreat, but as soon as I started running I straight into a strong, solid body, making me stumble back a little.

"You are not going anywhere, turtle." I looked up at the face of the speaker and I felt my blood run cold.

"Tiger Claw!?" Tiger Claw stood there, firm and strong and his face showed no emotion at all. To say I was surprised would be an understatement, I was cold with fear and very shocked to find the the foot clan and Tiger Claw so near the farm house.

"How did you find-? No, wait it doesn't matter, just-!" I forced myself into thinking again and I faked running of to the left, and then I threw a smoke bomb to the ground and then ran away into the forest. I heard Tiger Claw roar in anger, but I heard him order the robots to get me, so I tried to run faster. I reached into my belt and tried to find my T-phone but then remembered that I had left my T-phone in my lab to charge, and silently cursed myself for that. But I did the other thing I could think of, I screamed. I knew I wasn't too far away from the house, so I hoped someone would hear me.

I tried to shake the robots of my tail by running through the woods zigzag style and even tried to climb a tree and continue to flee in the trees, but before I could get high enough a chain shot out and was close to wrap itself around my ankle so I jumped down and kept on running on the ground, ducking under some bushes and when I came out on the other side of the bushes I saw, only a few feet away from me was Leo. Leo had pulled out his katana, but lowered it when he saw me.

"Donnie?" I was about to run up to him, but then I felt a chain wrap itself around my ankle and the chain was pulled back, making me fall to the ground, but before they could drag me away I grabbed onto a root and looked at Leo, who now looked worried and surprised. I reached out one of my hands for him to grab.

"LEO!" He snapped out of his trance and started to run towards me and reached his hand for me, but had his sword in his other hand in a tight grip.

"Hang on Donnie, I'm coming!" He ran up to me and grabbed my hand and let his sword fall to the ground and grabbed my other hand as well, and pulled on me as hard as he could, but the chain around my ankle was also pulled on hard, making me cringe in pain, but I didn't care at the moment. But then someone yanked so hard on the chain around my ankle, making me lose my grip on Leo's hands and someone dragged me through the bushes again. But I wasn't silenced yet, so I screamed out again.

"LEO, HELP!" I heard him call out for me, but I saw Tiger Claw ran up to me, picked me up and threw me over his shoulder and back towards the portal.

"Hey, let me go you big pussycat!" I tried to kick him in the head, but he only tightened his hold me so I stopped kicking but didn't stop struggling to get away from him.

But I saw Leo run through the bushes after me, but then halted and dived in behind a tree when he saw Tiger Claw. I assumed that he was surprised to see Tiger Claw and the foot clan in North Hampton, but thanks to the training in the woods I saw that Leo followed us in the bushes. I tried to fight back against Tiger Claw's hold on me, but I knew that he was both stronger and a better fighter than me so it didn't help much to fight back.

Behind Tiger Claw was about four foot-bots and I guess they were looking out for the others, but that seemed to be a pretty useless idea, because Leo jumped down from a tree branch and sliced through the robots in only a matter of seconds and when Tiger Claw turned around and saw the robots sliced and diced Leo had already jumped back into the bushes.

And Tiger Claw just had time to turn around and look at the destroyed robots before Leo threw a smoke bomb in his face, and while Tiger Claw was blinded and tried to claw away the smoke from his eyes, his grip on me loosened a little, allowing Leo to grab my arm and pull me away from him and tried to drag me away from Tiger Claw, but he managed to grab my arm just as Leo managed to drag me away from him, making him lose his grip on my arm.

"Oh, no you don't! I am not going to let you get away easily! Foot-bots, take out that other turtle!" Leo started to fight of the robots that attacked him and I tried to fight back, but then I noticed something, we were back at the Kraang portal the foot had first come through. I tried to fight against Tiger Claw's grip on my arm and even managed to kick him in the armpit, though it didn't work the slightest. I turned to Leo, who was busy fighting of foot-bots and for the moment didn't see the portal, so while I struggled against Tiger Claw's grip I cried out to Leo.

"Leo, get out of here! Save yourself!" I barely said that before Tiger Claw threw me through the portal and at first I saw nothing but a flash of pink and purple before I fell flat on something hard and I at first didn't feel like getting up, I just wanted to lie there for now. That was until I saw who was standing in front of me. I put my elbows in front of me and raised myself up a little and looked up at Shredder's helmet covered face.

"Shredder..." I gasped out and I felt myself grow cold with fear. Shredder didn't say anything, he just looked at Tiger Claw, who now had entered through the portal along with the leftover foot-bots, who smirked a little down at me.

"Master, the package is delivered."

(Normal P.O.V)

Leo tried to fight his way through the robots and tried to get to Donnie and Tiger Claw, but the robots seemed to grow in numbers, the more he defeated those freaky bots. He sliced robots to the left and right and didn't even notice the big purple and pink triangle only a few feet away. It wasn't until Donnie cried out to him that he saw it.

"Leo, get out of here! Save yourself!" He turned to Donnie, just in time to see him get thrown into the Kraang portal.

"Donnie!" He sliced through one last robot, and then ran for the portal to go through as well, only to be kicked away by Tiger Claw and not one second after he hit the ground he felt Tiger Claw place his foot on the turtle's carapace, making it impossible for him to get up.

"Foot-bots, we are done here! Return to the Master!" He grabbed Leo's shoulder and threw him at least ten feet away and then ran in through the portal, and was followed by the robots. When Leo got to his feet he saw the portal close, leaving him all alone.

"NO!" He ran up to where the portal had been not ten seconds ago, and prayed for it to open again. That didn't happen though and Leo didn't no whether to cry or scream. He decided to head back to the house and tell the others what happened.

(Raph's P.O.V)

I was sitting with Mikey on the porch and we're both talking about what happened during lunch today. Both Mikey and I had been angry with Leo right after it happened, but now we had both calmed down a bit.

"You don't think he meant what he said, do you?" Mikey asked me and I saw he was a little nervous about the answer. I shrugged. I didn't know what to answer, Leo had been acting very broody lately so who knew. April and Casey walked out of the door and Casey had his arm around April's shoulders and they both walked up to us and sat down with us. April had wet cheeks and red eyes, but other than that she looked fine.

"Are you okay now April?" Mikey asked carefully and I could see he didn't want to upset her more. April nodded slightly.

"I'm fine Mikey, just a little sad. I just can't believe Leo would say something like that. Donnie's working as hard as he can on things around here but Leo doesn't seem to notice that." Casey removed him arm from her shoulders but kept his hand on her shoulder.

"Don't worry Red, I'm sure Leo's just a little stressed or something, he'd never say something like that and mean it. I'm sure he'll come here any second and apologize." Just as he said that we saw Leo running out of the woods and towards us and he yelled at us.

"Guys, guys! We've got problems!" The way he sounded made me a little concerned and I jumped down from the porch and ran up to him.

"Hey Leo, calm down. What happened?" Leo panted heavily and I lead him to the porch and he sat down a took a few deep breaths before he started talking.

"There was foot-bots in the forest, along with Tiger Claw!" I felt my heart stop beating. Foot-bots? And Tiger Claw?! Had the Shredder found us? Why else were they here? April and Mikey paled and Casey looked very shocked.

"Foot-bots and Tiger Claw? Here?! Why?" April asked and wiped away the leftover tears from her eyes and cheeks and stood up. Leo shook his head and shrugged. He lowered his head in shame, and I couldn't understand why he felt ashamed now.

"I don't know, but they managed to capture Donnie." He almost whispered it out and then hid his face in his hands and rested his elbows on his knees. If my heart stopped beating before, then I don't know what happened now. I know I was breathing, but I couldn't feel the air get into my lungs.

Mikey shook his head in denial, and I saw small tears starting to form in his eyes. April placed her hand over her mouth and sat down again and Casey placed his arm around her again, but I saw he was shocked too. Leo shook his head and let his hands fall into his lap.

"This is all my fault! If I just had-!" I stopped him before he could finish that sentence. It wasn't time for self pity right now.

"Leo! This is not your fault, okay!" Leo looked at me, and I saw tears falling down his cheeks and he looked completely broken.

"What if we never see him again? What if Shredder kills him?! And the last thing we did was having a quarrel!" I placed my hands on both sides of his face and made him face me.

"Leo, listen to me! Donnie's both smart and strong and I'm sure he can figure something out on his own, while we come up with something here. We'll get him back, I know we will." I pulled him towards me and hugged him, and he immediately returned the hug with just as much force as me. When I released him, Casey stepped forward and placed his hand on Leo's shoulder.

"Yeah, dude we'll figure things out. Now, why don't you tell us what happened?"

A/N: Okay, it's finally done! I really hope you like this because it took me the entire weekend to write this, and there are parts I'm not all that pleased with. And again, I will try to finish my other story as soon as I can. As soon as my inspiration comes back I will start writing on the next chapter.

And tell me if you want me to continue this story, because I don't know if this is good enough for you, but I hope it is! And I hope this story will be four or five very long chapters, kinda like this one. And just so you know, Bebop and Rocksteady are in this story. I thought it would be fun to have them in this story.

Anyway, I hope you like this story and please review, favorite and follow! Good night everybody!