Clary gave a shriek as Jace lunged at her during their training and she jumped out of the way, landing on her hip.

"Oh, come on! I'm not that scary." He teased.

"Ouch, Jace. I think I broke my hip." She moaned, purposely trying to catch him off guard.

His face immediately turned worried and he rushed to her, only to be drug down.

"That's cheating, my dearest." He joked, pinning her underneath him.

She smiled up at him. "Hardly."

"I see you two are having fun." A voice said.

They looked at the door and saw Will standing there…looking like he just got out of a sauna.

"What's up with your face?" Jace asked, getting off Clary.

"I just got done killing a demon." He said, even though his eyes said something else.

"I see."

"Come on. I want to fight you." Will said to Jace.

"Really? You want to fight me?"

"Well, if you're my descendent, you must be good."

Now Clary could see where Jace got his cockiness from.

"Alright. One round. Let's go." Jace said.

The boys got in their fight positions and Jace motioned for Will to attack.

Will dashed for him and Jace slid underneath his legs.

"Not bad…for a two year old." Will said with a smirk.

"Oh, I was doing that move at one." Jace said, lunging again.

Will caught him and twisted him around, putting him in a headlock.

Jace continued to struggled and then bit Will on the hand.

"THAT'S CHEATING!" He yelled.

"That could happen in a real fight!" Jace yelled back, his eyes wild with excitement as Will jumped back on him.

Clary watched as the two Shadowhunters wrestled on the ground and then Tessa stepped next to her.

"What happened?" She asked, her eyes wide.

"Will challenged Jace to a round. They're too equally matched." Clary replied, watching as Jace dodged a roundhouse kick. "So, what happened between you and Will?"

"N-nothing." Tessa stuttered.

"Oh, come on!" Jace exclaimed in the background.

The girls giggled and then Clary turned to Tessa again. "Something did happen. Will walked in here looking like he had just stepped out of a sauna."

"He…he found me in the library and stole my book. Then, I jumped on him to get it back and he told me it had rolled underneath the chair while we were wrestling. He was on top of me…and then kissed me. I fell asleep in his arms." She said with a smile.

"Are you a Shadowhunter?" Clary asked.

"No. I don't' know what I am. I Change."

"What's that supposed to mean?"

"Give me your necklace."

Clary took it off and gave it to Tessa.

Tessa took a deep breath and gripped the ring in her hand. Seconds later, Clary was staring at herself.

She screamed and Jace and Will came running over.

"What the—" Jace began.

"I'm so sorry, Clary! I should have explained more." Tessa said, changing back to herself.

"No. No. It's alright. Y-you just surprised me…that's all." Clary said, hanging onto Jace's arm.

Will laughed. "Well, now that that's out of the way."

"Are you alright?" Jace murmured.

"Yeah. I was just surprised. I didn't know." She said, burying her face into Jace's chest.

He made small circles on her back.

"I'm so sorry, Clary."

"It's alright. It's not that big of deal."

"If you're sure about it..."

"I'm positive." She said, lifting her face from Jace.

"JACE! CLARY!" Isabelle yelled, running into the training room.

"What's wrong?" All four of them asked.

"A greater demon has been spotted at the Pandemonium."

"Oh, great." Jace moaned.

"What's the Pandemonium?" Will asked.

"Only the best teenage nightclub in all of Brooklyn." Isabelle said. "Tessa, follow me and I'll dress you. Clary, you follow me too."

The girl left and Will and Jace sighed.

"Stop that." Both said at the same time. "You first."

They glared at each other and then smiled.

"Geez. I wonder how else we're alike." Will said, smirking.

"Well, we should probably go get ready."

"Yeah. Probably.

"Alright, here we are." Isabelle said, almost squealing with excitement.

Will and Tessa looked at the building and followed their present Shadowhunters inside.

"Isabelle, Magnus, and I will scout the premises. You four go inside and look around there." Alec said.

"Alright." Jace replied.

"Watch for us. We'll send one of us back to tell you if we found it in thirty minutes. If we don't come back, which we will, I want you to go back to the Institute and get Mom and Dad. Got it?"

"Yeah." Jace said.

"Good. Don't try and play hero, Jace. I mean it."

"I won't."

"See you."

"May the angel watch over you." Jace said.

Alec stopped. "May he watch over all of us." He replied, continuing to walk.

Magnus took his hand and they turned down an alley.

"Do you think they'll come back?" Tessa asked.

"Of course." Jace said. "Let's go inside."

Will looked at Tessa and took her hand with a warm smile. "Come on."

All of them walked inside...and were immediately thrown into the pandemonium.