Hello there, and welcome~ :)
This is my first story, so please, no flames. I'm still trying to get use to . Heh.. ^^"
I also want to thank PurpleNinjaGAMER12 for beta reading this, and also helping out with the plot.
You should check out her stories! :D

Down in the sewers with the Hamato Brothers. Donatello was working on a formula to alternate the personality of a certain hot-headed brother.
Raphael.

"Hey Donnie, what're ya workin' on?" Michelangelo inquired, staring intensely at the liquid his genius brother was experimenting with.
"Nothing Mikey. Can you please go away I'm working." Donnie muttered, keeping his chocolate orbs on the syringe he held within his grasp.

"Please Donnie let me stay!" Michelangelo pleaded, with his eyes the size of saucers.
Donnie let out an exasperated sigh, pausing his work to rub his temples.

"No, Mikey. I asked you politely if you would leave already." Donnie looked at him, his eyes narrowed.
Mikey hesitated for a moment, pondering in thought.

'Hmm.. Maybe if I leave I could sneak back in when Donnie leaves his lab. Then I could finally see what's been keeping him cooped up in here all week.'

"Okay then, I'll just go and see what Raph and Leo are up to." He said, crossing his arms across his plastron, exiting the lab.
Donnie looked up, watching the orange-clad turtle sprint out. He lifted an eye ridge.

'That was odd..' The turtle in purple thought.

Then Mikey went to see what Leo was doing.

"Shh... Mikey I'm watching a new Space Heroes episode." Leonardo said, his blue irises glued to the T.V screen.
Mikey left and saw Raph talking to his turtle, Spike.

"Sometimes I wonder why I get so mad, chew on your leaf if you understand.." Raphael told Spike, watching Spike hesitate and take a bite of the lettuce leaf. Raph smiled, patting his little buddys' head.

It soon got dark and Donnie went to sleep, and Mikey went into his lab.

'Now time to find out what he's been working on this week.'

Mikey saw the liquid and thought 'How bad could this be?' He then brought his lips to the glass cup, taking a sip.
He grimaced at the taste of it. He then held his hands on his throat.

He then collapsed on the ground, blacking out.