Alright, here is a MI/ID crossover! Sorry the chapter seems short, if you guys like it, I'll make the next part longer... Please review!

Disclaimer: I don't own the characters... sadly. Thank you, Cassie!

London Institute, 1878

It was early evening, and everyone was just sitting down to dinner. At one of the table sat Will Herondale, dark-haired and blue-eyed, studiously ignoring everyone else at the table. On one side of him was Jem Carstairs, pale and ethereal, desperately trying to engage Will in conversation. On Will's other side sat Tessa Gray, shape shifter, currently furious with Will, though still on good terms with Jem. At the other end of the table was Charlotte Branwell, head of the Institute, waiting for her husband Henry to show up. Also absent was Jessamine Lovelace, delicately beautiful, who had gone to visit distant relations in Paris.

"Tessa," Jem begged in a whisper so that Charlotte couldn't hear, "Tessa, please don't do this. The same goes for you, Will. You two can't ignore each other forever."

"I can, and I will," Tessa said stubbornly. Will said nothing, just stared down at his hands.

Charlotte stared at the trio across the table from her and sighed. It was clear that both Will and Jem had feelings for Tessa, though she didn't seem to return them for either boy. Where is Henry? He ought to be here by now…

It was at that moment that Henry burst into the dining room with a jubilant expression on his face. "I've done it!" he cried, slightly out of breath, "I've done it!"

All four of them turned to look at him. Finally Charlotte voiced the question that was burning inside of all of them. "Done what, Henry? What did you do?"

"Why, I believe I've created a Portal that can cross not just space, but time! We can delve into the past, or perhaps even leap into the future! Imagine the possibilities! Why isn't anyone saying anything?"

It seemed everyone was too stunned to speak. The future? It was too good to be true, they thought, and it probably didn't work. It wouldn't be the first time Henry invented something that was nonfunctioning. Obviously Will was the first one to voice this concern.

"Henry, are you quite certain this will work? The last time you told us a Portal could travel through time, you nearly blew the Institute apart, and got Magnus Bane angry at us."

"It wasn't my fault that time. Warlocks are so touchy about rifts in space and time." Henry protested.

Will looked as though he was about to make a caustic remark, so Charlotte intervened. "We don't know that this doesn't work yet. We need to at least give this a try, don't we?"

Jem spoke up. "I agree with Charlotte. Shall we give it a try, then? Where should we go? What time period?"

Henry looked relieved that someone was willing to believe him. "We should go to the future, just in case we accidentally mess something up. How far into the future should we go?"

Will spoke up. "Lucky number thirteen."

"Thirteen years is a long time, Will. I was thinking more along the lines of a few months," Henry said.

"Thirteen or nothing. I don't compromise," Will said.

"That's for sure," Tessa muttered under her breath, earning a glare from Will and a small smile from Jem.

"Alright, alright, thirteen years into the future. Now where shall we go?" Charlotte asked. "Tessa? What do you think?"

Tessa thought for a moment. "New York. We should go to New York." The wistfulness in her voice was unmistakable.

Henry nodded. "Well, then, now we have something. Are we all ready?"

New York Institute, 2008

Clary Morgenstern sat in her bedroom at the Institute, finishing a drawing. Her green eyes narrowed in annoyance as her red curls once again fell in her eyes. She pushed them back impatiently.

At that moment, someone walked in without knocking. Without even looking up, Clary knew it was her boyfriend, Jace Herondale. Sure enough, Jace was there, leaning against the doorframe, giving Clary a sultry grin. He looked even more beautiful in the low afternoon sun, gold hair shining and tawny eyes sparkling. Clary hopped up and ran to him, giving him a long slow kiss, melting beneath his touch. After a minute, he broke away.

"Just thought you might want to know that the bloodsucker's here," he said softly.

"Simon's here? To see me?" Clary inquired, surprised. Though Simon could go out in the sun now, he rarely came to the Institute, where he could not enter. He may be a Daylighter, but the Institute was still hallowed ground and he was still damned.

"No, he came to see me. Now that I've had my way with him, though, I thought you might like to say hello," Jace said sarcastically. Clary whacked him on the arm and ran downstairs to see Simon.

Simon stood as close to the Institute doors as he could, peering inside, waiting for Clary. His eyes lit up when he saw her, for it had been a long time. She had been in Idris, homeland of the Shadowhunters, doing business for the new Council there. He tried to have as normal a life as possible, but how normal could life possibly be as a vampire? Clary threw her arms around Simon, saying hello. At least it sounded like hello; her voice was muffled since she had her face buried in Simon's shirt.

He smiled. "Hey, Clary, missed you too. How was Idris?"

She pulled back. "It's so nice, Simon, I love it there. I'd love to go back someday."

"Alright, alright, that's enough of that, then. Hands off my girlfriend, bloodsucker," Jace broke in, sounding more amused than upset.

"Hey, Blondie, tell your girlfriend to get her hands off me. I'm just standing here."

Behind Jace appeared Alec and Isabelle Lightwood, tall, pale and dark-haired, though Alec had clear blue eyes like crystal and Isabelle's eyes were dark as night.

"What are we all- Simon!" Isabelle cried, jumping into Simon's arms. Though the two of them did have an on-and-off relationship, Isabelle tended to over do it sometimes.

Alec stood silent, waiting for his boyfriend to show up. He was seeing none other than Magnus Bane, the extravagant High Warlock of Brooklyn.

Simon brushed his brown hair off his forehead, hiding the Mark of Cain that was present above his eye. He furrowed his brow and looked up. "Does anyone else hear that… whirring noise?"