Sasukeblooked around, assessing the situation before him with mild confusion. One minute, he was in Kaguya's dimension, watching her be sealed away for good, the next he was here, in some unknown, underground facility, watching a confrontation between a tall man with long black hair and what appeared to be guards.

A blue portal swirled behind Sasuke, seemingly originating from a device in front of him. The black haired man was tearing through the guards, killing or turning them with his staff. They fired at him with firearms, to no meaningful effect. The dark skinned man tried to stall, but the black haired man escaped with a cube retrieved from the device, after announcing himself as Loki and taking who appeared to be the device's operator.

Sasuke didn't get involved. He had no stake in this fight. He did start following the black haired man out of the facility, out of curiosity.

"Kid," said the dark skinned man, "are you with him?"

"I work alone," Sasuke replied, then he continued his way out of the facility.

He caught up just in time to witness a chase between a woman and one of the men Loki had turned to his side. They used strange, self-moving carriages for the chase. They moved quickly, but Sasuke could keep up with them. Loki escaped in the end.

Sasuke approached the woman, who rounded on him, brandishing her weapon. He used his Rinnegan to teleport the gun out of her reach, causing the woman to take a step back in fright.

"Relax, I'm not going to hurt you," Sasuke said.

"Sir," the woman said into a communication device, "I've been approached by a teenager in Japanese clothing. He kept up with my car. Understood."

The woman turned her attention back to Sasuke.

"I'd like to offer you a job," she said. "That cube Loki ran off with may be your best chance at getting home."

"I'm listening," said Sasuke.

Sauske's head swam. He had certainly wound up in a strange world. And the team Nick Fury wanted to assemble was doomed to failure. It was an eclectic mix of various abilities and personalities. It would be a miracle if they could work together for five minutes, let alone long enough to find Loki. Nevertheless, Sasuke had agreed to join "the Avengers" and, after hearing of his abilities, they were eager to have him.

Now he sat on board an enormous ship, waiting for the others.

"Sasuke," said Maria Hill, interrupting his thoughts. "The captain, Doctor Banner, and Agent Romanov are here. Why don't you come say hello?"

Sasuke merely grunted in response and went to meet the arrivals. He walked right up to the three.

"Since when is SHIELD recruiting kids?" Steve Rogers asked upon seeing him.

"I'd like to know that myself," said Bruce suspiciously.

"This is a special case," Natasha replied.

"Hn, Uchiha Sasuke," Sasuke said succinctly. "I'm no kid."

"What's your story, Sasuke?" Steve asked.

"It's a long one. All you need to know is that I'm from someplace far away and I need the Tesseract to get home."

Rogers seemed unconvinced and Bruce looked concerned, but neither pressed the issue further.

"Just find the Tesseract," Sasuke told them, walking away, though he did pause briefly when the floating fortress started flying.

Shortly afterwards, Sasuke was visited by an agent of SHIELD.

"Sir, we've located Loki," said the agent. "Director Fury asked me to remind you that we need him alive to tell us where the Tesseract is."

Sasuke simply smirked and headed for the flying machines these people called jets. Steve and Natasha were already there. Together, they headed off to one of this world's many nations.