Jace stepped into Jonas' room, finding a whole bunch of Shadowhunters rooting around in his friend's things. He turned and found a man rifling through Jonas' personal possessions. "I'm pretty sure that's not the cup you're looking for," Jace said, snatching the notebook from the man's hands.

"Give me a break, Wayland," the man groused. "I'm just trying to do my job."

Jace walked over to his parabatai. "Alec, call this off now."

Alec clenched his jaw. "I guess Jonas' bedroom is in part of Switzerland?"

His words only served to anger Jace further. He'd thought Alec and Jonas were friends, or at least on good terms, but apparently not.

"We can't call it off," Lydia said as she approached. "We have to find the Mortal Cup."

"It's all clear," a Shadowhunter declared.

Jace shot the man a glare. "Of course it is."

Lydia sighed. "It's not here. Let's keep looking."

Jace waited until Lydia and the other Shadowhunters had left. Then he stared at Alec. "What is going on with you?"

"Look, Jace," Alec began. "We have to turn over the Cup."

Jace shook his head. "Alec, he's risked everything to find it."

"And we've risked everything for him," Alec countered. "Either he gives the Cup to Lydia, or I'll do it myself."

"Why don't you just talk to him then?" Jace questioned.

Alec's gaze narrowed in distaste, body tensing.

Jace sighed and lowered his gaze, sensing he wouldn't win this argument. "I'll bring him back," he said. He had a plan. "But, please, let Jonas be the one to give the Cup to the Clave. We owe him that much."

He looked up, and Alec nodded. "It's the right call," he said. "You'll see."

Alec then walked off, and Jace waited for a moment before shooting a glare over his shoulder. He pulled his phone out and took a photo of the blocking rune on his bicep. He then sent it to Jonas and once the picture had gone through, he dialed his number.

"Jace," Jonas said in greeting.

"Did you get the picture I sent?"

"Yeah."

"Draw it. Now." Jace glanced around himself, making sure no one was overhearing his conversation. "It's a Blocking rune. It prevents anyone from finding you using Shadowhunter tracking." He paused for a moment, giving Jonas time to draw the room. Then he continued, careful not to mention Alec, "Jonas, the Clave heard you had the Cup. They think you're working with Valentine."

"That's gotta the most ridiculous thing I've ever heard in my life, and considering I was recently told all about the Shadow World, that says a lot."

Jace waited for the man to finish. He then said, "I'm going to secure the Cup. You need to get to someplace safe. Someplace the Clave would never look. I'll find you."

He then waited until Jonas hung up before heading off to find Izzy.

Magnus stared at Jace, waiting patiently for the Shadowhunter to explain why he'd dragged him away from his work. The warlock had noticed some kind of drama unfolding around him in those past few hours, but he'd been too busy to pay much attention to it.

"Lydia found out that we have the Cup," Izzy began. "And now we need to get it somewhere safe before the Clave can get their hands on it. Alec's hidden it in a safe, but we can't open it without his stele. We need to act quickly. The Cup needs to be somewhere secure and out of the Clave's reach before we can help Meliorn."

"They're taking him to a holding cell," Jace said. "And a guard unit will transport him to the Silent Brothers. They think he's hiding information. I tried to talk them out of it, but Alec just said that he doesn't have a choice.'" Jace began to circle Magnus. "And neither do we."

Magnus sucked in a breath. "Let me get this straight. You need Alec's stele to open the safe, and you want me to steal it from him?"

Jace came a stop in front of him. "We prefer the word 'borrow.'"

"Without his knowledge," Izzy added.

Steal from Alec? Magnus couldn't do that. Not when he was trying to woo the man.

"No. No can do," Magnus said and began to walk away. "Not happening."

"Magnus." Jace reached out and put a hand on his shoulder, stopping him. At Magnus' glare, Jace dropped his hand, but he continued, "Ever since Alec found out our parents were in the Circle, he's been... messed up. He can't see the big picture."

"If the Clave is willing to subject Meliorn to the Silent Brothers, if they're willing to go this far… what do you think will happen if they get the Cup?" Izzy questioned. "This affects everyone."

"Help us get into that safe," Jace urged. "Help us stop this."

Magnus drew in a deep breath. On one hand, he had to admit that they were right. On the other hand, they were asking for a lot. He shot them both pointed looks.

"You're both going to owe me," he began, crossing his arms. "I'm talking 14th century. Gold, rubies... definitely diamonds. And Alec can never know."

"That's a given," Jace concurred.

Magnus eyed Jace closely. "If we're going to do this… there's no turning back."

Jace and Izzy shared a look, but ultimately, there really wasn't any other option.

Magnus crept up to Alec's door and checked to make sure the coast was clear. He then cast a one-way window spell on the wall so he could see what was going on inside.

Alec was tending to his forsaken wound, and Magnus hesitated, feeling even worse about what he was going to do.

Resigned, he waited until Alec turned away to teleport the stele to Jace. Then, he pulled out his phone and waited for Jace's text.

As soon as he got it, he teleported the stele back in place, just in time for Alec to grab his jacket and pull it on. Magnus quickly tucked his phone away and vanished the one-way window. He then pressed his fingers against the wall, as though in examination.

Alec opened the door then, stepping out as he pulled on his jacket.

"All done for today," Magnus declared and gave a nervous chuckle. He turned to glance at Alec. "Place is secure." He glanced at his rings as he began walking down the corridor, Alec followed at his side. "Not bad for a day's work," Magnus continued. "I thought I'd see how you were doing."

Alec stopped and turned to face Magnus. "I meant to thank you for your advice," he said. Magnus raised a brow, silently requesting that he elaborate. "The whole... 'follow your heart' thing," Alec explained.

"Oh, well, what can I say?" Magnus asked with a pleased smile. "I have a deep understanding of the human psyche. At least, that's what Freud always said."

Alec paused for a moment, and then said, "I'm getting married."

"Whoa!" Magnus exclaimed with an unsure chuckle. "That's a tad sudden, isn't it? I mean, we should at least go to dinner first–"

Magnus had begun to back away, but suddenly Alec reached out and grabbed his arm, stopping him. He let go and said, "No, Magnus, family is everything to me. You have to know that."

"I get it," Magnus said. "You're part of a 'Don't ask, don't tell' culture," he parroted in a teasing tone. "I'm fine with it. You're a traditional guy."

"Yeah, I am," Alec agreed. "That's why I proposed to Lydia."

"That's…" Magnus trailed off with a confused frown. "Interesting."

Alec stammered out a response, "It makes sense. It's a solid partnership. For both of us."

"'Solid partnership,'" Magnus quoted back to the Shadowhunter. The warlock laughed, stuck between a mix of shock and disbelief. "That's... hot."

Alec averted his gaze, and Magnus sighed. "Well, okay, then. Congratulations. Marriage is a wonderful institution." He paused. "...Not that I would know." He drew a breath, and inclined his head. "Goodbye, Alexander."

As Magnus walked away, he wondered how things had managed to go wrong so quickly.

Jace, Izzy and Luke waited outside Hotel Dumort for Jonas and Simon. As soon as Jonas emerged, Jace sighed in relief. "It's good to see that you're not dead," he commented as the auburn haired Shadowhunter approached.

"Sorry to disappoint," Jonas replied in a drawl.

Jace clapped the man on the shoulder and commented, "So this is your safe hideout, huh?"

Jonas shrugged. "At least they have wi-fi."

"Can we please focus on the matter at hand?" Izzy interrupted. "Unless no one here cares that the Clave is planning on murdering Meliorn."

"What?" Simon said.

"What?" Jonas exclaimed at the same time.

"They think Meliorn has more information on Valentine and the attack than he's saying," Jace explained. "They're taking him to the Silent Brothers."

Jonas scowled. "Well there's no way that's happening on my watch."

Jace nodded, proud that the Shadowhunter had the same thoughts as they did. "That's the plan, Jonas. Rescue and recovery."

Izzy explained, "We get him from the guards, in and out, no one gets hurt."

"That sounds like a challenge," Jonas replied.

Luke frowned and said, "Without any backup?"

Jace shifted and glanced about the group. "Pretty much sums it up, yeah."

Jonas cocked his head. "What about Alec? Is he going to help?"

Jace glanced worriedly at Izzy before answering. "No. Not this time."

"Well that's dumb, let me call him."

Jonas pulled out his phone, and dialed. Jace was tempted to stop the man… but maybe he could convince Alec of the mistake he was making.

Maybe.

Jonas waited for a while, phone held to his ear, before he sighed. "Voicemail." He slipped his phone back into his pocket. "He'll call me back."

Jace wasn't so sure about that, but said nothing.

Jonas thought for a moment, and then said, "It won't be long before they escalate from harassing Seelies to bullying all of the Downworlders. If we want to stop this, we need help."

Luke agreed. "My pack will track the unit, create a distraction."

"I would suggest vampires, but…" Simon offered, then trailed off. "I doubt they'll cooperate."

"As much as I hate to agree with Simon," Jace began. "Vamps aren't exactly team players."

"So we just need to talk them into it? Too easy." Jonas smirked. "I've got this."

"Alright, Raph– Can I call you Raph?" Jonas asked.

"No," Raphael answered.

"Welp, nevermind then. Okay, look here Raphael, I've got a limited time offer for you." Jonas flourished his hands. "An alliance, with the Seelies…" He paused and looked pointedly to Luke.

Luke sighed, but said, "And the werewolves."

"Why should we believe you?" Raphael countered. "You killed our people. You violated our home–"

"You kidnapped a mundane, remember?" Jace cut in.

Simon raised a hand and waved it. "That was me."

"We're willing to put all of that behind us," Jonas said. "Camille was a craptastic leader, and I know you can do better." He eyed Raphael closely. "And as a leader, you should realise that we all need to work together to stop Valentine before he can fuck everything up. We also need to keep the Clave in check, and prevent them repeating the same mistakes they did in the past. We are a new generation of Shadowhunters, that believe everyone can be equal." Jonas grinned. "Now let's kick some discriminatory ass."

Raphael was silent for a moment, and then he said evenly, "This decision requires a consensus."

The vampires were silent for a moment, then Simon stepped forward. "I vote yes," he declared.

"Well, well, well," Raphael said, seeming amused. "Baby's first words."

Simon's gaze narrowed. "Don't make me regret them."

Raphael stared at Simon. "If our newest member pledges his loyalty to his new leader and joins our clan…" He turned to Jonas. "We'll all stand beside you."

Jonas quirked a brow at Raphael, but then turned to Simon.

Simon nodded. "I accept your deal."

Raphael processed this and then turned to the vampires surrounding him. None of them disagreed, and some even appeared supportive. Raphael looked to Jonas. "Then we're in."

Alec led the guard to the Downworlders' entrance for the City of Bones. Things had been uneventful, until they turned a corner and a werewolf growled at them.

Alec looked around, taking in the other pairs of glowing eyes surrounding them.

"This could be a trap," he said. The guards turned to him in question. "Secure the perimeter," Alec ordered, making a judgement call. At their hesitation, he insisted, "Do it now."

Half of the guard dispersed to do as told. Alec continued on with the rest of them, and as they neared the warehouse he reached out and took hold of the Seelie. "I'll take Meliorn inside," he declared. "Just stay here. Nobody gets through."

He hurried ahead, but paused and turned back when he heard a shout. Sure enough, all of his guards had disappeared.

"Not too late to turn back," Meliorn commented.

Alec pushed down the nerves bubbling inside of him and focused on the task ahead. "Quiet. I won't tell you again," he hushed Meliorn. They continued onwards and into the building.

They stepped up onto a platform and Alec traced a rune onto a pillar. The entrance to the City of Bones revealed itself immediately, a cement wall turning to dust and falling to the ground, opening up an ancient archway.

He eyed it closely for a moment, before taking a few steps forward, intent on getting this over with.

"Alec."

Alec froze at the sound of the familiar voice, and turned to see Jonas standing there. His heart sunk to the pit of his stomach. Jonas, the man who'd worked his way through all of Alec's walls, was with the other side— was trying to stop him.

Jonas' gaze flickered to something over Alec's shoulder. Alec turned to find Jace standing there, looking ready for a fight.

"You told me you were taking Jonas back to the Institute," Alec said. He glared at his parabatai. "You lied to me."

"I did what needed to be done," Jace replied in an even tone.

"Alec," Jonas called out. The auburn haired Shadowhunter raced forward, standing in front of Alec. "You have to realise that by doing this, the Clave is going to tear a rift between the Downworlders and Shadowhunters. Please, just let Meliorn go."

"I have my orders," Alec replied. He ignored any feelings that he felt for the Shadowhunter. This was a matter of the law and doing what was right. Alec couldn't let his emotions get in the way of that.

Besides, he was marrying Lydia. He couldn't feel anything for Jonas now, he couldn't.

...He couldn't.

(But he did.)

"Orders?" Jonas scoffed. "That's a terrible excuse for kickstarting a war! Ignore your damn orders. They're stupid."

"See?" Alec cut in. "That's how little you know about being a Shadowhunter. You couldn't possibly understand–"

Jace interrupted him. Alec was the littlest bit relieved, because he hated putting that look of anguish on Jonas' face. "It's you that doesn't understand, Alec. Not this time."

Alec cocked his head at Jace. Deciding to just continue the mission, Alec grabbed Meliorn and started forward again.

"I'm really sorry," Meliorn apologised.

An instant later, though, Jace charged into Alec and the two of them fell to the ground. Jace straddled him, holding him down.

Jace shouted, "Jonas, Meliorn, go, now."

Alec heard them run off, and he tried to knock Jace off of him, but the man had too solid of a grip grip. "You always broke the rules, but never the law."

"I'm not breaking the law, I'm trying to save it." Jace glared at Alec. "And now you're getting married, Alec? You're making a mistake."

"Oh, am I? Okay. Why doesn't the legend, Jace Wayland, tell us what exactly I'm doing wrong?"

"It's about me!" Jace shouted. "It's about me, it's about Jonas. It's about your feelings. It's because you're–"

Alec cut Jace off by punching him in the side of his face. Jace fell off of Alec, and they got both to their feet. They traded blows for a while, and then Alec managed to catch Jace's arm. He threw the man down onto the ground and knelt over him.

Alec got in a few good punches before Jace kicked him, sending him flying against the wall. They brawled again, Alec having a clear advantage as he blocked all of Jace's attacks and peppered him with punches and elbows to the man's face.

He managed to get a grip on the blonde, and he threw him to the ground, swiftly pulling out his seraph blade and holding it against Jace's throat.

They stared at each other, Jace appeared desperate. "Do it." Jace strained against the blade and shouted, "Do it!"

Jace panted, gasping for air. When Alec didn't move, the blonde exclaimed in a stricken voice, "I don't wanna be alive if we're on different sides, Alec."

Alec stared at his parabatai, and realisation hit him like a punch to the gut. He fell backwards, sitting and staring blankly at the middle distance in front of him.

Jace got to his feet and stood over Alec, gasping for air. "Come with me," Jace said. "We'll fight Valentine the right way… together."

Alec couldn't meet his parabatai's gaze. "If we do that…" he began. "We'll be considered traitors like Mom and Dad."

"I'm begging you," Jace said, and continued, "my parabatai... my brother. Please, Alec, come with me."

Alec glanced up at Jace, meeting the man's gaze. He considered the offer for just a moment, but he couldn't bring himself to accept it. Even if it meant fighting against Jace. Even if it meant fighting against Jonas.

"No," Alec said.

Jace's expression turned stricken.

The blonde looked away for a moment, eyes swelling with unshed tears. Then, without saying another word, he turned and left.

After the drama with Alec had gone down, Jace and Jonas reconvened with Meliorn. They approached him as he was catching up with Izzy. In an… intimate way.

As they neared, Jonas cleared his throat.

"I hate to break up this reunion, Izzy," Jace interrupted. "But we have to go.

The two pulled apart.

"You're in good hands," Izzy told Meliorn. Then she looked at Jace and Jonas. "I need to get back to the Institute, see what hell has broken loose. Try and talk some sense into Alec." She sighed. "Take care of him."

"Nah, we're going to let him die," Jonas replied.

Izzy rolled her eyes and kissed Meliorn one last time before heading off.

Meliorn watched her go, and then turned to Jonas. "Isabelle told me it was your idea to rally the Downworlders. That you spearheaded my rescue."

Jonas quirked a brow in intrigue. "That's funny, because I would say that Izzy did most of the work."

"He's being modest." Jace smiled softly at Jonas. "You're a Shadowhunter now."

Jonas returned Jace's smile, though he seemed a bit embarrassed by Jace's compliment.

"I've been surprised by more than one Shadowhunter tonight," Meliorn told Jonas. "You risked everything to unite us."

"Right after you tried to sell him out," Jace cut in.

Meliorn ducked his gaze. "Not my finest moment." He looked up and focused on Jonas. "Which is why I'm offering you a gift… for your sacrifice. If you're ready… I can help you find your father."

"If I'm ready?" Jonas grinned. "I shall accept your challenge, Meliorn."

Jace stared at Jonas. "I don't think that was meant as a challenge, Jonas."

Jonas narrowed his gaze at Jace. "Are you implying that you don't think I can beat his challenge?"

"No– I– You–" Jace stammered for a moment, then gave up. "Nevermind. Let's just go."

Meliorn seemed concerned by the exchange that'd just happened.

Jace kind of felt bad for the guy.

Kind of.

"Welcome to the Seelie Glade, the remotest edges of it."

Jonas looked around in awe. "This was never mentioned on Tripadvisor."

"That's probably because they never found the way in here," Jace said. "Even though there are entrances all through the mundane world."

"You just have to know where to look," Meliorn added.

"Not that I'm complaining," Jonas began. "But why are we here? How does this help us find Valentine?"

Meliorn grinned. "Your necklace, it's a Portal shard."

"Tell us something we don't know," Jace replied.

"How does it work?" Meliorn asked.

Jonas considered his question. "To be honest, I'm not really sure. It gives me visions of people, though."

"I'm curious, Shadowhunter, who knows so much about Portals, did you never wonder why this Portal shard doesn't behave the way normal Portals do?" Meliorn asked Jace.

Jonas shot a confused look at Jace.

"Normal Portals can only take you to places you've been," Jace explained to Jonas. Then he turned to Meliorn. "I guess I never really thought about it."

"I see Isabelle is the smart one in the family," Meliorn commented. Jonas snorted in amusement, nodding his head, then ducked his gaze when Jace shot him an offended look. Meliorn smiled and continued, "Your Portal shard works the way it does because it's a piece of a Portal from another dimension."

Jonas nodded. "That sounds cool."

Jace crossed his arms, suspicious of what Meliorn was implying. "You're saying there's a Portal in some other universe that can take us to anyone if we just think of them?"

"If you can find the only Portal still standing in that dimension… it will take you to your father," Meliorn told Jonas and then continued leading the way.

The two Shadowhunters followed, and soon the forest opened up a bit more and the ground evened out. "These trees are where the alternate dimensions intersect the Seelie realm."

Meliorn pointed at two trees that had vines connecting them in an archway shape. "How is it possible that the Clave doesn't know about your dimensional doorways?" Jace questioned.

"They are our most guarded secret. We are their protectors. Only Seelies know of their existence."

"So are you going to have to kill us now that we know?" Jonas questioned.

"No," Meliorn denied, sounding somewhat offended. "I'm telling you because I owe you a life debt… and I don't like being indebted to anyone."

They came to a stop in front of the trees, and Jonas asked, "How bad would it be–"

Meliorn finished for him. "If the Seelie Queen finds out I've shared this with you? I could be executed."

"Well," Jace began, "We'll be extra careful then."

"There is no 'we' in this scenario." Meliorn nodded his head to Jonas. "Only Jonas goes in to find the Portal. My debt is to him."

Jace glared at him. "You've given us no reason to trust you, Seelie."

Jonas pursed his lips. "Well he did kind of risk execution by bringing us here…"

Jace shot the Shadowhunter a look, but didn't say anything else.

Meliorn took that as his cue. He stepped forward and began gesturing his hands about, commanding the vines to move. "This will establish a connection to the other dimension," the Seelie explained.

"Is everything upside down in that dimension or is it like this one?" Jonas asked.

"It is…" Meliorn trailed off, then continued, "But it isn't."

Jace sighed. "Could you be more vague?"

"It is an alternate timeline, in a sense." Meliorn continued moving his hands, and slowly something began to form between the two trees. "There, Shadowhunters and Demons no longer exist."

Jace blinked, stunned by his words. "What?"

"And Downworlders have conformed to the mundane way of life to avoid detection," Meliorn finished as though Jace hadn't interrupted.

"Where'd the Shadowhunters go?" Jonas asked.

"Their services were no longer required, because they won the war against the demons, centuries ago. Once they sealed the rifts between their worlds… their culture faded away." Meliorn paused, and then explained, "Once you arrive in the alternate dimension, you will assume the body of the Jonas in that world. You will think and feel just like him."

The Seelie's words seemed to trouble Jonas. Jace looked to the Shadowhunter in concern.

"Will I still be me, though?" Jonas asked. "Will I still want to find the Portal?"

"There's a catch," Jace realised. "With Seelies, there's always a catch."

"Your alternate self could consume you if you let it," Meliorn said.

"That sounds fun," Jonas said in a drawl. "Let's do that."

Meliorn exhaled roughly as he strained to establish the connection between the two dimensions. "Focus on the differences between that world and ours," he told Jonas. "Find something or someone to keep you grounded to this one."

Jonas shrugged. "Sounds good enough to me."

"It will be more difficult than you think," Meliorn countered. "If you don't hurry, you could cease to be this world's Jonas."

Jonas' eyes went wide as the realisation hit him. "Then I won't be able to come back," he said.

Meliorn nodded.

Jace turned to Jonas. "You're going to be fine," he assured the man.

Jonas smirked, appearing resigned to whatever fate he was about to endure. "Oh, yeah, sure, totally."

Jace rolled his eyes and wondered why he'd even bothered.

So the next two chapters are some of my favorites! I've put a bit of a pin on the alternate world, and I really hope you guys will like it!

ErzsebetMorgana: Do you want Jonas to befriend Sebastian? Or just be suspicious that he might still be alive, when he hears that Jonathan is supposedly dead? And suspicious of Sebastian when he turns up in season 2? Sorry, I think I'm misreading what you're saying D: And thank you so much! You'll be seeing his reaction soon!

Minho'sgirl15: Aww! Thank you! Out of curiosity, what're your ideas for how the wedding kiss should go in this fic? Thanks again xo

AliceTheCactus: I know! I feel so bad putting him through all of this angst, but things will work out! I promise! Thank you for your comment :D

vane: Tadaa! Thanks for leaving a review!

Any ideas about What the AU world is gonna be like? I'd love to hear them!