AN: Okay, that summary thing is way too short. Here is the full summary that I wanted to write.

Post COG- Clary and Jace are finally broken from their awkward brother/sister relationship and allowed to be together in the way they both wanted. But they aren't expecting tomorrow to hold more surprised. When something captures Clary without leaving a trace, Jace struggles to save her. Hindered by runes and airplane schedules, he wonders if he'll be able to save her in time. Or will it be too late for the Clary they all know and love?

Disclaimer: Cassandra Clare owns all character and settings. Only the plot of this story belongs to me.

Jace:

I sighed and glanced quickly into the room. I knew there was no point to it; the Institute was empty except for myself.

It had been about two weeks since we'd returned from Idris. Although I missed my home country, missed its beauty and grace and lack mundanes, I was glad to be back in New York. New York was safe, and the war with Valentine was over, and Clary was no longer my sister.

On the topic of Clary, my heart clenched. I missed her. I hadn't seen her since our return. She had gone to make to mundane school with Simon, leaving me alone at the Institute.

So much had changed in the short time we had been in Idris. So many things that had seemed to facts of life were replaced with others. The fact that I was finally allowed to have Clary, that it wasn't weird for me to be in love with her. The fact that Alec and Magnus were officially going out, and no one was threatening to kill him for it, although Izzy teased him often. The fact that Jocelyn and Luke were living together, finally acknowledging that they loved each other. The fact that I was legally Jace Lightwood now. The sadder facts, like fact that Max was gone forever. The fact that the damage was done, and could never be repaired in Idris and in us all.

All the changes were confusing to me, and I'd taken to sneaking around the Institute, looking for a place where I wouldn't have to witness anyone's emotions; whether they be Mayris and Robert crying over Max or Alec and Magnus laughing at some joke together.

But there was no one here now, and I was free to do anything I'd like.

It was around 2:30 P.M., and everyone was out. Robert and Mayris were away for a few days visiting some Canadian Shadowhunters. Isabelle had taken advantage of the lack of her parents to grab a credit card and go shopping. Magnus had called earlier and Alec was now over at his house.

Bored, and yet thrilled that no one else was around, I wandered into the kitchen. Since our return, Mayrse had cooked every night, which meant that the fridge was full of her leftovers. I poked around, finally deciding on a delicious-looking soup. But soup made me think Isabelle's soup, and of Clary.

Before I could even begin to comprehend what I was doing, I had flown across the room and dialed Clary's home phone number.

"Hello?" a voice said. Luke.

"Um…" I stuttered, unsure of what to say. Sure, Luke knew that Clary and I liked each other, but we hadn't exactly mentioned anything to Jocelyn or Luke. Could I call and just expect the phone to be passed over?

"Who is this?"

"Jace." My name was out of my mouth before I had thought about it, and I instantly regretted it.

"Hello, Jace," Luke's voice was unsure, like he didn't really know what to say to me.

"Um… could I talk to Clary? Please."

"Uh, Jace? Clary is at school. But she should be home soon. I can have her call you then."

Right, school. I should have thought about it. But I guess sitting around all day had made me forget that at 2 o'clock on Monday Clary wouldn't be at home.

"Oh, okay. Thanks, Luke." There was a pregnant pause, and then Luke hung up. I sighed, knowing that it would be at least another half hour before Clary would call.

I sat down on a stool, lost in thought. I thought again about the time, in this very kitchen, that Isabelle was making soup. It had been obvious to me then that Simon loved Clary, but it had pissed me off. Even then, no one was allowed to love Clary like that but me.

I thought about her birthday, when I'd taken her up to the greenhouse and kissed her, almost accidentally. It had been one of the most amazing moments of my life. After that, nothing had really seemed the same anymore. Even after I discovered that during that whole time Simon had been asleep in her room, my feelings for her hadn't changed one iota.

I thought about when Valentine had told me that she was my sister. How I didn't want to believe it, because I loved her in such a different way.

I thought about the Seelie Court, when I'd had to kiss her to free her, and how she'd kissed me back, not because she had to, but because she could.

I thought about that time she'd told me that it sickened her to love me, and how much I wanted her to disappear, so that I could suffer in peace, without having to see her face all the time.

I thought about the time Taki's, where I'd promised her that I would just be her brother from then on, even though I couldn't stand to think of the pain that promise was going to bring in the future.

I thought about how I'd forbidden her to come to Idris, even though I could see that it was what she wanted more than anything in the world. It was wrong of me, but it was dangerous for her, dangerous for us all, and I couldn't have her there to distract me. Whenever she was around, I was an emotional wreck, and I had needed my wits about me in Idris.

I thought about how I'd screamed at her when she'd gone anyway. I'd told her that she was selfish and horrible, and I didn't want her around because all she did was mess things up. I was horrible to her, just horrible. I remembered how after that I thought she'd never love me again. But it was necessary, I'd thought to myself, she needed to go home, to safety.

And then I thought about how she's brought me back, how she could have asked for anything in the world from the Angel Raziel. She could have had riches or world peace or a mountain of chocolate, but she asked for me. How in that moment I felt so unbelievably and completely–

"JACE!" a voice shouted from across the Institute, startling me. Particularly since no one was supposed to be here.

"LISTEN UP, JACE." Isabelle yelled. "I KNOW YOU'VE BEEN AVOIDING US, BUT I'M IN A GOOD MOOD RIGHT NOW, AND I'M GOING TO COME TALK TO YOU WHETHER YOU LIKE IT OR NOT. SO COME OUT, OR I'M GOING TO HAVE TO COME FIND YOU."

I sighed. There went my afternoon of supposed peace. There was no point in going out to Isabelle, she'd find me in a minute anyway. I quickly put my dish in the sink, hiding it under a couple other rouge items, so that she wouldn't know I'd been eating. I was in the process of arranging my features into and innocent and expectant expression when the door burst open.

"AHA!" Isabelle said. "I knew you'd be here! Mom is not going to be thrilled when she finds out you've been eating before dinner."

Isabelle hadn't been kidding when she said she was in a good mood. I saw the huge smile on her face and groaned inwardly. She was going to try to make me talk. And there was only one possible thing she would want to talk about.

"So, how's Clary?"

I glanced evenly at her. She knew as well as I did that I hadn't seen Clary since we'd returned from Idris.

"Oh come on, Jace. You can't sit there and ignore me for forever."

Oh yes, I can. Just you watch me.

"Fine. Don't tell me anything. I'll just go ask Clary." And she walked over to the phone and dialed. I considered saving her the embarrassment of discovering Clary was still at school, but decided that she deserved it. Luke would probably just be more annoyed with her than he was with me.

If only the world were that fair.

"Hey Clary!" Isabelle said brightly into the phone. "So, I'm holding your boyfriend hostage trying to get him to tell me what's going on between you two, but he remains silent. What say you?

I froze. First of all, Clary was home, which was just utterly unfair no matter how you looked at it. Second, that was the first time I'd ever officially been called Clary's boyfriend. It was… weird. I mean, obviously I was. I loved her more than anything else in the world, but it just seemed like such a normal world. It was very mundane, and my feelings for Clary would never, ever, be mundane.

During my frozen moment, Clary had evidently responded and Isabelle was talking again.

"No, don't worry Clary. I've got him the kitchen so he won't starve to death. He's in very good condition and being treated well."

I listened as hard as I could, and maybe I imagined, but I though for a moment that I heard Clary laugh over the phone.

"So," Isabelle said, a grin on her face. "I'm sick of sitting around here with all these guys. I need some girl time. And you are so kindly going to give it to me. Come over. Now."

Clary said something.

"Then bring your stupid homework. You can do it while you're avoiding my questions. I really need to see you."

Clary spoke again.

"Good. See you soon."

I looked up, shocked.

"Did you just invite Clary over?" I asked, disbelief coloring my voice.

Isabelle looked at me levelly. "Of course I did, Jace. She's my friend, and that's what friends do."

I must have still looked surprised, because Isabelle kept talking. "Besides," she said, "don't you want to see her?"