Hi this is my first crossover fanfic. Not that it matters anyway. This is about the mortal instruments gang find a new species of vampires in forks. It's after city of lost souls future and also after breaking dawn. Hope you like it.

It was midnight in Forks and the Cullens were all sitting around the dining room table chatting g about normal things. Renesmee was talking about a deer she caught in the woods that morning. Jacob was at his house having a night out with the pack. Edward went over to the piano and started playing one of Bella's favourite songs. She came over and sat next to him. Life could never be more perfect. Carlisle and Esme started to dance and the tune of the piano changed to ballroom dancing. Alice jumped up and took Renesmee's hand and started twirling her around like a ballerina. They started late thing and were having a good time. Casper came up behind Alice trying to scare her. It didn't work.

"Come on Jasper. You should know I would of already seen that coming"

"Yep, but it's worth a try anyway." He smiled down at her and started dancing with her. Renesmee walked over to Bella and asked if she would like to dance too.

"Of course I would" Bella jumped up and started dancing with her daughter. The tune changed to a more fast pace. There was a knock on the door.

"It's Jacob" Alice said. "Come in!" She shouted at the door. Jacob came in with Seth, they were all smiling.

"Where are the rest of the guys?" Bella asked.

"Oh, their to drunk and decided to go home. There's gonna have a hell of a hangover tomorrow." Jacob replied. As they got to where everyone was dancing and having a good time. Alice froze, no one noticed except Kaspersky because she was still in his arms.

"Alice what's wrong?" But he knew it was best not to disturb her vision.

They were practicing fighting, where the Cullens had battled the Volturi. There were six of them. There was an Asian man with blue sparks coming out of his hands. He had cat eyes and a lot of glitter. One man had blue eyes and ink black hair. He was fighting a person similar looking to him but the opposite sex. She was tall and had the same ink black hair and blue eyes. She had a whip in her right hand, poised at the ready. A man who was golden he might of been a vampire as well. He had blond hair and golden eyes. You could see gold running around in his veins. He was fighting a short girl with red hair and emerald eyes. Then there was a boy with very pale ski, Brown hair and... vampire fangs! He was up against the man with all the sparkles. Four of them had strange swirling tattoos on their arms and legs. But they still kept on fighting. It would happen tomorrow, when the sun is gone and the moon is up.

"What is it Alice?" Jasper asked. Edward already knew. Who were these people?

"Strange people, six of them. Four of them have strange tattoos. One of them looks a bit like us. A man had sparks coming out of his fingers he also has cat eyes. The other bot is normal, except he has fangs." Esme walked up to Alice.

"When will they be coming?"

"Tomorrow night."

It was midnight at the Institute. Clary woke up by a banging noise from her door. Oh crap. Clary jumped up and grabbed her seraph blade and opened the door all ready for an attack. it was Isabelle. Ever since they got the message Erchomai everyone had been on high alert. No one ever knew when he was going to attack and that just made everything worse and more great for Sebastian because he knew he was making them all run around like ants. He was one step ahead of everyone else. it was hard to trust people now. you never knew who was on what side, who was evil and who was not. And to Clary, it was just bloody stressful. There were only so many she could trust, but luckily Isabelle was a Shadowhunter she could trust. Isabelle was dressed in hunting gear and all of her make up was done up. her hair was let down, coming down in waves down her back.

"Mum wants us in the library, I don't know why but its urgent and she also said pack a bag before you get to the office. I'll wait until you have finished packing"

"Oh, okay then let me get changed first." Clary replied. Isabelle closed the door and waited. Clary walked over to her wardrobe and picked out skinny leather jeans. She threw on a grey top and put a leather jacket on, which surprisingly could hold a lot of knives and daggers inside that you couldn't even notice they were there. Clary went over to her vanity table and sat down putting on concealer, mascara, a bit of blush. Isabelle walked in and smiled, you've taught her well Isabelle, she's finally putting on make up without being forced to. Clary was just putting on eye-shadow while Isabelle got out a suitcase and started packing her clothes. she was just about to put in a small clingy dress when Clary stopped her.

"Really, Isabelle? you are the one who dresses up for the demons, not me. and wherever we are going I'm pretty sure you don't need dresses" Okay so I haven't taught her well enough then. Oh, well baby steps, she'll learn about fashion. Isabelle put the dress in anyway and threw more in. She then started putting in more appropriate clothes in like skinny jeans, leather jackets, tops, etc. Soon enough they were finished and were walking down the maze of corridors. They opened the doors to find Jace, Alec, Simon, Magnus, Maryse and Robert all standing around the table in the middle. Each person had their own bag as well.

"What's going on?" Robert spoke first.

"We think that Sebastian's plans to attack next is in a place called Forks. More demons are attacking and strangely there is no Institute there so that's probably why Sebastian is attacking in that particular area."

"We think that you six should go down there and protect the area while we build an Institute. Magnus will be there to make a barrier around Forks, Simon because he could smell Sebastian's blood because he has bitten him before. Jace cause of his heavenly fire" Clary and Jace both flinched, neither could kiss or do anything except hold hands, sometimes Jace would become so hot and bothered he was practically a heater. "Alec, because he is responsible for all of you and is Jace's Parabatai. Clary, you will be there because you are his sister and we can trust you to get everyone out quickly enough by a portal. and Isabelle because she is lethal when she wants to be." Maryse explained. Isabelle beamed at the comment her mother gave her. "Jordan and Maia will be joining you but about a week later. Now we found a place big enough to fit you all in. it is next to a house with a man named Charlie Swan."

That is the first chapter I hoped you liked it. I don't know If Charlie Swan has a next door neighbour with a big house so if he doesn't in the books the sorry for being incorrect. Please read and review :)