He had packed all his things into his bewitched satchel, his mother's notes and sword, a selection of knives and a small piece of bread. He held the small portal device under his arm, wrapped in a black cloth. He stopped for a moment to gather his thoughts. The moment he removed the Dark Energy from the core of the generator, there would be no turning back. The energy must be used or it would go critical and destroy the best part of the planet. All in all, it was probably a bad idea.
"Distract the guard," Loki hissed at Sif. A few seconds later, the guard was on the ground, snuck up on and knocked unconscious, "I said distract him, not clobber him."
"It worked."
"You know that whole thing about being mistaken for a woman?" he hissed, "I would not worry too much about it."
Sif narrowed her eyes, however in the darkness; it was unlikely that Loki saw her look of distain. They reached the great doors together, and Loki reached into his satchel.
"Is there something in there that can break bewitched locks?" Sif snapped back at him, "or am I missing a good feast for nothing."
Loki narrowed his eyes, squinting to see the lock with a bizarre looking device in his hand. He laid it against the lock, and electromagnetically, it moved the pins and the door clicked open. Sif watched him in confusion for a moment.
"I stole it from Fury," he said, "The humans have some interesting things."
"I never thought I would see the day."
"Nor did I."
The generator was huge, it took up the entire room and blue sparks several feet long bounced off the walls back into the device. Even Loki looked slightly surprised at the grandness of the device and it took him a moment to react and approach the device via the main catwalk.
He touched the metal surface and he almost felt a tingling in his hand, then in his brain, "it's alive," he whispered to himself, "Hello."
"We must go soon."
"A moment, Sif," he pulled something else out of his satchel, what looked like a clear crystal, but in fact it was more like a battery pack than anything else. He touched it to a port on the generator, "Please," he said as he siphoned the energy.
"Loki!"
"Got it," he told her as he quickly made his way back towards the great doors. They pushed the doors shut and Loki pulled the lock device off the door and put it back in his pocket, "five minutes."
On a mountaintop far from the castle, Loki set up the device as Sif kept an eye out for soldiers while occasionally taking glances back down to the ground, at Loki work.
"Why did you take so long with the generator?"
"It's not a generator," Loki said flatly.
"If not a generator-?"
"It's a creature," Loki cut her off, "whatever it is, it is caged within that shell. It is in pain"
"You are stranger than you have ever been."
"My mind is more open than it has ever been," he countered. He never looked up from his work, "It's ready." He breathed.
"That is good," Sif remarked, "It is getting cold out here."
He breathed, "I guess this is goodbye."
"I guess," Sif shrugged, "Loki?"
"Yes?"
"I never thought I would say this, but I will miss you," Sif said.
"I think I will miss you too," Loki smiled at her, "and that really scares me."
Sif extended her hand and he shook it, "We part as equals."
He activated the device and it shone with bluish green light as it warmed up, and he stood in front of the output, "do you want to know why I came to you for this?"
"Why?"
"I may not like you, but I trust you."
That was when the device activated and blew Loki back into the air, and he disappeared into a blue light. She was alone on the mountain top. She touched the device, it was burned out.
"I have a lot of explaining to do."