A/N: Three chapters longer than what I'd planned, but it's finished. Now to plot the sequel (or sequels, I still haven't decided).

x-x

Jane was flying. She was flying thanks to an alien twirling his hammer. The child inside of her wanted to call it a magical hammer, but she mostly wanted to ask Thor (nicely, of course) if he would mind lending her his hammer so she can figure out how it works, how it can allow him to fly through the air and summon lightning.

Buffy had told them that magic did exist, and Thor had confirmed it. Briefly, Jane thought again about her conversation with Thor last night. He had mentioned that magic and science were so closely linked in Asgard that they were considered the same thing. The idea that magic and science weren't as opposite as she had always thought was giving her a headache.

She really needed to speak with Buffy after this and ask her if she knew any witch that had decided to study physics.

Jane felt it when they started to go slower and she opened her eyes, which had remained closed through the trip. How did Thor manage to keep them open? The wind was annoying. And cold. The wind was also cold. Jane eyed Thor armor suspiciously. More magitech?

Thor landed them on the desert ground with expertise, right next to the elaborated burnt circle that indicated the landing of Thor's friends.

"I want to take a look at your hammer when you get back," and he better be back, because he had a long list of questions for him about the Bifrost.

Thor smiled at her before looking up towards the sky and started to yell.

"Heimdall!"

Jane wasn't sure what was meant to happen, but it was obvious from Thor's growing desperation that something was wrong.

"What's he doing?" asked Buffy once she arrived, with Sif and Hogun following her. The others arrived after them a few seconds later. Jane couldn't help herself from rolling her eyes when she realized that Darcy and Fandral were flirting with each other.

"Heimdall. He controls the Bifrost," answered Thor, his frustration was clear o his face. "But he's not answering my call. I fear that he might be in problems."

"Give me a moment," Buffy took out her cell phone and started to push numbers. Thor continued calling for Heimdall.

"Wait," said Jane. "You know how to create an Einstein-Rosen bridge?"

"Me? No, no. That's not really my thing," the blonde answered her while she waited for an answer from whomever she was calling. "But I know someone that can," She frowned. "If she can answer, of course. Everyone is kinda busy."

Clouds started to gather over the black marks in the sand, reaching in a cylindrical shape towards the ground. There was a light inside the clouds, formed by the rainbow colors. Was this the Bifrost? Buffy closed her cell phone.

Thor turned towards Jane and took her hand.

"I must return to Asgard, but I give you my word I will return for you," he said before the back of her hand. "Deal?" He asked looking at her.

Jane's answer was to kiss him on the mouth. She didn't know if she was going to see him again, many things could happen in the fight that Jane knew was going to happen, and she had no intentions on regretting not having kissed him. They parted after Thor enthusiastically returned her kiss.

"Deal," she told him and he ran to the circle marking the place of the Bifrost.

The Warriors Three followed him, and behind her she could hear Buffy promising Sif to go visit her so they could have a girl's night together – why it did involve swords and killing, Jane didn't want to know. Sif clasped the Slayer's forearm before joining the other Asgardians and then they disappeared in a column of light and clouds.

"That's a… interesting way of travel," commented Erik when the sky cleared.

Of course, less than ten minutes later the sky started to darken again.

x-x

It was when the sky began to darken like a storm was coming when Buffy rethought her decision of pushing the red button of her phone. She should have waited for Dawn or someone from her team to answer.

She didn't know what was happening in Asgard, but the dark sky above them made her want to open a portal to that place and go there with a team or two. The group in Scotland was always ready in case of emergency; Dawn was an expert with portals, and some of the girls from Sunnydale where there this year.

She hated not being able to do anything.

She was about to call Scotland when the sky cleared once more and the sun shined again like nothing had happened.

"Okay, does anyone know what happened?" asked Darcy. "Buffy?"

"No idea."

"Whatever happened, I'm rather sure that it had something to do with the Bifrost," said Jane. "I thought that your people knew how to create bridges."

"Portals," answered Buffy. "We use portals, but if I understood you correctly, it's the same thing, right?"

"Not really your thing, eh?" asked Erik.

"You can use a car if you want, but that doesn't mean that you know how it works exactly. You only need to know the basics." Buffy told him with a shrug. "When it comes to magic, I'm high school level, people like Willow or my sister attended Hogwarts."

"Hogwarts also exists?" Buffy turned towards a Darcy with an expression that was a perfect mix of glee and incredulity.

"What? No! I mean," she took a deep breath. "There's a castle in Scotland that we call Hogwarts as a joke, but that the one from the books doesn't exist in this dimension. That's all," clarified Buffy. Then she added, "And there's no wand waving, it's too easy to become defenseless if you rely on them too much."

Buffy's cell started to sound.

"Speak of the witch…" muttered Buffy when she saw Willow's name on the screen. "Heeey, Wills. Are you too busy? I really need a portal to Asgard. I've made new friends."

The "what" that followed her comment nearly left her deaf.

x-x

Thor turned a corner and crashed against a woman running. He was going to help her, but someone else reached for her first. His eyes widened when he saw a familiar blonde woman helping the red haired one sitting on the floor.

"Wills, are you okay?" asked Buffy, setting her sword against the wall. The other woman looked at him.

"Oh, you're a pretty wall," a pause. She looked at Buffy "I said that aloud, didn't I?"

"Willow, this is Thor," said Buffy with a smile. "Thor, this is my best friend, Willow. She's a witch."

"You're not supposed to be here," were the first words that came to his mind.

"Yeah… The big guy with the sword was a big clue," commented Buffy. "Anyway, the sky went briefly dark after you left, but everything seems to be calm around here now, what happened?"

Thor's face went expressionless.

"Thor?"

"Have you seen the remains of the Bifrost?"

"The rainbow thingy?" asked the witch. "We arrived there. It was easy to open the portal to that place," she eyed the hammer in his hand. "It's not something easy to break."

"I didn't have a choice," said Thor. "My brother went mad and attempted to destroy Jotunheim."

"Oh," was Willow's only answer before looking at Buffy. Buffy shook her head before speaking to him.

"Is he still alive?"

"He fell into the path created by the Bifrost."

"I'm sorry for your loss, then."

Thor accepted her condolences with a nod.

"Buffy, if it was a portal and there wasn't a body…"

"Heimdall has searched for him, but he hasn't found Loki," Thor explained to Willow.

"In this dimension. Portals are tricky things," said Willow. "I'll keep an eye out for you."

"Willow…" Another look from Willow to Buffy and the blonde sighed. "Fine, but if this ends in an apocalypse I'm blaming you."

"Deal!"

Buffy turned towards Thor.

"Now, can you tell Heimdall that we're not enemies, please?"