I do not own rights to the Teenage Mutant Ninja Turtles franchise

Note: This is my first fanfic, so constructive criticism will be appreciated.

"Calm down, Raph!" exclaimed Leo as Raphael raised his fist threateningly.

"CALM DOWN?!" came the reply. "I'LL HAVE YOU KNOW-"

It was nothing new that Leo and Raph were arguing again. They were siblings, after all. As they rambled on, Mikey hid his face lower in his comic, pretending to read it, but in truth, just trying to remain unnoticed until the argument was over. Donnie sat to the right of him, staring silently into the fight. By his calculations, this quibble had been going on a lot longer than average, and he didn't see that it would stop anytime soon.

Michelangelo jumped at the loud clang of Raph throwing his sais against the ground. As his comic drifted to the ground, he stared wide-eyed into his two oldest brothers' angry faces. He wistfully glanced over at the turnstyles that led to the exit of the lair before turning to Donatello.

"I'm going up," he said.

Donnie had to read his lips to understand what he was saying as it was much too loud to hear his little bro. He nodded in comprehension, and Michelangelo leapt up and ran over to the turnstyles before disappearing from view.

Deciding that it wasn't such a bad idea as he looked at his older brothers again, Donnie got up to go to the dojo to tell Splinter that he would be going, too. If he tried to tell Leo or Raph, they would pay him no mind.

Michelangelo flipped his skateboard in mid-air as he glided from one rooftop to another. He took a minute to enjoy dodging the various antennas, satellite dishes, and ventilation ducts before proceeding to the next. Having a cool breeze while he sped on was quite pleasant. He loved skateboarding on rooftops. The height made it all the more dangerous, but the air of risk made it even more fun and exhilarating to him. He preferred activities with the rush and excitement of adventure. He wondered vaguely if Raph and Leo had finished bickering as he flipped, holding tight onto his board beneath him.

A few miles away, the Stockman-fly sat at his desk, eating a Choco-log and staring at the computer screen, which was filled with over complicated science charts and formula and some calculations. He repeatedly tapped his clawed hand on the desk, nervously contemplating a specific graph.

He jumped as he heard his lab doors slide open. He looked into the shadows behind the doors. From them emerged none other than The Shredder, flanked by Tiger Claw, then Rahzar and Fishface, then finally Bebop and Rocksteady. The Shredder marched forward there was space for all of them to enter, then came to an abrupt halt.

The Stockman-fly flew out of his chair and landed on his hands and knees, bowing to Shredder.

"Baxter Stockman," Shredder growled, with a definite air of authority in his voice.

"Y-yezzz, Mazzter?" Stockman buzzed, his voice quivering.

"I have come to realise that the turtles' greatest strength can be turned into their greatest weakness," he growled, an extremely rare hint of pleasure in his voice. "They depend on each other. If we could control one, we could wipe them all out. I want you to continue your work on the brain worm creatures. Eliminate all of the weaknesses that they had last time, or the consequences will be... unfortunate."

"Yezzz, zzir," said Stockman.

"As for the rest of you-" continued Shedder, turning to face his henchmen. "-find the turtles. They are more vulnerable separated. When one is alone, that is when you will attack. They are too strong together. Knock him out and bring him here. We will control him against his pitiful brothers and Splinter. They will not be willing to fight him, and we will have our vengeance!"

His other henchmen bowed in understanding, then all of them left the room one by one, leaving Stockman to get to work. He flew over to his computer and pulled up his research on the worms. There were detailed sketches and lists of chemicals on the document. He came across the chemical on the bottom of the list- the reactant.

Yes, he thought. That's what activates the entire solution... so if I just add more of that, the chemicals will work faster and make it stronger!

He goggled for a second over how simple yet effective the solution was. He flew happily over to his desk and began to work feverishly. This plan was going to work. They were finally going to take down the turtles.