H3llo everyone it's L33sha-L33sha. I'm baq with a Mortal Instruments fanfic. So this idea came to me in a dream. I kno so cliché but it did. What if the MI characters had to go to school because the clave believes a greater demon is somewhere in their city in a high school making kids and teachers mysteriously vanish . I kno freakn awesome rite well anyway this is the first chapter.

I do not own Mortal Instruments , but I do own Antithesis Merryshaw.

Song I'm listening to as I write this chapter: Rude boy by Rhianna

Chapter 1: Greater Demon

"What!" Jace exclaimed jumping up so fast he knocked the book in his lap onto the floor. Maryse Lightwood regarded him with a stern look. "May I finish?" she asked. Jace scowled but sat back down and let her continues with her story.

"As I was saying before I was so rudely interruptered,"she glanced at Jace. "The Clave believes that there is a greater demon hiding out somewhere in our city. Normally I wouldn't involve you kids but the Clave has requested that you be assigned to locating it. I personally don't see why. This is a job for trained and older experienced shadowhunters."

"Finally some actions. I was getting bored with all these little petty demons." Jace smirked

"If you were listening Jace I said that the Clave wants you to locate it. Once located we will contact the clave and wait for futher actions. There will be no fighting."

"Luke hasn't told me anything about a greater demon, and he's in constant contact with the Clave." Clary said interrupting whatever Jace was about to say.

"He probably thought you had enough on your mind, with your moms pregnancy and you trying to create new runes." Izzy said clearly on Jaces side in the conversation.

"Yeah, maybe." Clary said. It wasn't like Luke to keep things like that from her, but Izzy was probably right. She did have a lot on her mind and the constant training, inventing of new runes, and her mother's unexpected pregnancy wasn't making things any easier.

"So, when do we start "locating" the greater demon" Jace asked smirking ,when he said the word locating. Clary rolled her eyes. He swore he could defeat anybody. The first greater demon they'd fought would have ended in their deaths if Simon hadn't showed up when he did, but Clary had to give it to him he'd made up for it by defeating the other one who fed off fear.

"Whenever, The Clave gives us a place to start. It shouldn't be long since I've already since them a message." Maryse said she looked at her watch.

Meanwhile……………………….

"Mom." Antithesis said dropping her bookbag on the floor. She didn't expect her mom to be there, but she just wanted to make sure. She walked into the kitchen and noticed the note on the fridge.

Annie,

Hey hon. I went out tonight with Gary. Food in the fridge, you know my cell if anything happens.

Love,

Mom

Antithesis wasn't surprised. If her mom wasn't drunk and knocked out she was withy that scum of a boyfriend Gary. It didn't bother her anymore she didn't mind being at home by herself it was quieter when her mom wasn't there.

Antithesis groaned and walked upstairs to her room turned on her radio and pulled out her netbook. She had to start on the two page paper her new Psychology teacher had just assigned. Mr. Willowstar had replaced Mr. Kantyu , who mysteriously disappeared a couple of months back. He'd just got there and he was already assigning homework.

He was a weird guy. Tall , he was really tall with black long hair and strange secretive brown eyes. He'd walked in and wrote his name on the bored, passed out rule sheets and then assigned them all numbers. Numbers? Come on they were students not cattle, but that didn't even compare to the way he dressed.

He'd walked in a all black outfit. Black shirt, black trench coat, black boots and even black slacks. He looked more like a serial killer than a teacher, but Brooklyn Heights high school didn't play when it came down to picking teachers so he had to be qualified.

Antithesis sighed and began typing her paper

Sorry this chapter was so short. I had to get the preliminaries out the way before I got into the juicy stuff but hope you like please review……… but y3ah if you want anything to happen or just want to send be an idea just post a review and I'll incorporate it in…………………

L33sha-L33she out