So, it's my semestral break in school and I spent all my time updating my stories.

Hope you enjoy reading this!

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"James, hey, wake up."

He tried to shrug off the hand shaking his shoulder, "Go away."

She rolled her eyes, "Get up!"

James only shifted his weight, giving his back to her, murmuring something she wasn't able to comprehend.

"Fine, you leave me no choice."

The next thing he knew something cold splashed onto his face. He shot up from his comfortable position and began to cough furiously. His eyebrows knitted in exasperation but quickly changed to a confused look when he saw Allie standing before him, "Als?"

"About time, sleepyhead."

He groaned, wiping his face dry, "Where are we?"

"I don't know exactly," They stood up to look around. Allie observed that judging from the metal walls and steel floor they were standing on, they were no longer at school. "I think we're back home." she reckoned.

James peeked his head out to see the dark hallway with only faint lights surrounding it, but the various electronic-slash-techy things that made up the vast room proved that they were indeed back at their place.

"I've never been to this part of the facility before though," he curiously glanced around, "But it seems like it."

"So Uncle Tony's weird looking invention was a teleporter?" she gasped, astonished, "Ooh! I've got to tell him about it!"

"You're such a nerd," he claimed.

She scoffed, "You just don't like the fact I'm smarter than you."

"Shut up."

She stuck her tongue at him. James raised an eyebrow, "What are you, five?"

Allie gave him a frown, then noticed the window outside indicated it was already night-time. She knitted her eyebrows in confusion, glancing at her watch, "How long were we gone? I'm sure we just stayed for about an hour."

Her brother shrugged, "Don't know and don't care. I just want to rest."

She let out a sigh, "You're right. Come on, then."

They began to make their way towards the exit in the dark hallways. After they rounded a corner, finally, the familiar sight of the elevators greeted them.

James noticed the button panel beside the doors, as well as the thumb plate beside it. Their parents and the rest of their uncles and aunts agreed that the most effective way for security is to install a fingerprint scanner on the elevators. Only the Avengers, their children, and some of the most entrusted SHIELD agents were given access to the upper levels in the facility.

He glanced at the sign, Level 2. It read. But their rooms were located on Level 4-B, so he pressed on the arrow pointing upwards.

"Please press your thumb on the plate for analysis of fingerprint." A robotic voice sounded.

James did as what he was told. A green line immediately moved across his thumb back and forth before stopping. He was alarmed when it transitioned to red.

"Access denied. You do not have permission to enter the upper levels."

"What?" he exclaimed, completely baffled. He tried on again and pressed his thumb against the plate. The green line repeatedly did the action only to end up hearing the same results as the previous one.

"Access denied. You do not have permission to enter the upper levels."

"You have got to be kidding me," James complained, running a hand through his hair in irritation, "I think this thing's broken."

Allie pushed him aside, "Let me try."

She did the same as what her brother did- yet the outcome was completely the same. "Access denied. You do not have permission to enter the upper levels."

The fifteen-year-old red-head raised an eyebrow, "That's weird.." she muttered, "This never happened before. Let me call dad," she took out her phone.

James shook his head, "Call mom. She knows a lot more than dad when it comes to these things."

"Oh, right-"

"Who's there?"

They jumped at the voice, being frozen in place. Both siblings shared a startled look, their eyes widening to the size of oranges. It was a guy's voice and somehow- it sounded strangely familiar. James gritted his teeth, while Allie closed her eyes in nervousness, feeling her heart's pace increased twice than before.

They slowly turned around. The moment they saw who that voice belonged to, their jaws dropped in surprise.

A tall handsome young man stood in front of them. His sandy blonde-hair sat on his head, while his bright-blue eyes looked at them confusedly. He was wearing a brown jacket, the ends of his gray shirt peeking out, and denim pants.

The light coming from the phone in his hands shone on his face, giving the siblings a clearer view of the young man.

"Umm.." James glanced at Allie, who was trying not to gape like a fish.

"Are you lost? Who are you?" the blonde man asked them, his tone getting eerily suspicious.

Confusion was written all over their faces as they didn't know what to answer. They still couldn't understand what was happening.

"We're..." he struggled to answer, "SHIELD agents?"

Allie inwardly face-palmed herself. Her brother was not very good at making excuses and was most especially not a very good liar at all.

The guy raised his phone up, the light illuminated both of their faces. Allie winced at the sudden brightness. He gave them a perplexed look, "Huh. You seem to be very young for SHIELD agents and Tony didn't breach me about having new recruits."

"That's because..." James trailed off.

"That's because we had just been accepted." Allie filled in, "Mr. Stark told us that we could stay for the night since he would give us our final breaching tomorrow. As for the being 'too young' comment, thank you, we'll take it as a compliment."

She heard a deep sigh and guessed it was her brother being relieved to finally get out of that intense interrogation.

The guy still seemed to be doubtful of them, "Hm. Did Stark tell you anything else?"

Allie had sensed the tone in his voice. She knew this tone, almost sounding like it was practiced a few times before. The gears began turning in her head as she concluded something- it was probably a security question. More like a code specifically meant for the SHIELD employees.

She tried to think harder. The answer's been conveyed to her numerous times already, the only thing she needed now was to remember it.

Think, Allie, think.

"I think he said something about.." she trailed off, biting her lip, "Language?"

The two siblings waited anxiously when the guy didn't move. After a second, his expression changed to one more warmly and casual. "I knew he'd tell everyone that," he grunted.

A chuckle escaped Allie's lips, to which she quickly covered it up when the two guys looked at her in surprise. "Sorry," she said sheepishly.

The guy gave her a smile, when his face turned into a look of confusion again, "So are you guys lost or something? Because all SHIELD agents' rooms are located on the third level."

"We tried to," James said, "but it's denying our access."

"Hm. Tony must've forgotten to edit the system." The guy said, before pressing his thumb to the plate, "He's still not back from his mission though. In the meantime, you can ask Maria Hill, you do know her right?"

The two siblings nodded in response.

"Good," he said, before the robotic voice sounded again, "Access granted."

The elevator doors slid open and the guy went in first. When he noticed the two were still unmoving, he ushered them to come in, "I don't bite guys don't worry." he said with a slight laugh.

"Er, right." James said, quite awkwardly. Once they were inside, the guy pressed two buttons indicating, Level 3 and Level 4-A.

The three stood silently in the elevator. When it came to a halt, the doors slid open again and gave them a view of a large room. It looks to be a lounge.

"Well, here's your stop." The guy declared.

As they stepped out, both of them replied with a quick "Thank you". The guy stopped them before the doors slid close once more, "I'm sorry but I didn't catch your names."

"Allie,"

"James,"

The guy gave them a warm smile, "Well, welcome to SHIELD headquarters."

And then the doors shut close.

The siblings blinked a few times, still not snapping their gaze away from the now closed metal doors of the elevator.

Allie turned to her brother, "Was that.."

He nodded slowly, still not facing her, "Yup..."

"But how?" she yelled out in surprise, prompting James to shush her up. She said in a quieter tone, "That can't be him! He's-he looks so young! His hair is different and he's blonde."

"I'm trying to think, Als," he gripped his chin tightly, "But that had to be him. You saw him didn't you?"

"Yes! That's what freaks me out!"

"I think..." he gulped, running a hand through his blonde hair, "I think that we have accidentally traveled to the past."

"What?" she gaped.

James struggled to recall the date that was constantly popping up in the screen when they were in the elevator. When his mind went off with a click, his eyes widened, "I think... I think we're in the year 2017, sis."

Silence ensued between the two. Allie stared at her brother wide-eyed, "2017? But that's twenty years from our time!"

James started to pace around the room, "Think about it though, he looks younger and had a clean-cut shave and not to mention he's also blonde. He couldn't possibly dye and shave altogether when we just saw him this morning looking completely different?"

"My head's starting to hurt." she whined, going to sit on the floor. While doing so, she tried to let James' words sink to her, "But you're right it makes no sense at all."

"See?" he said smugly, "From where we came from, it's the year 2037. He must be around in his twenties right now. Well-physically speaking that is. But.." he ran a hand through his hair again, sighing, "I don't know. I don't know how this happened."

James went to sit on the floor beside Allie. She popped out her cheeks, clasping her hands together as if she was thinking deeply, "So, what do we do?"

"For once, I don't know. You got any ideas?"

"We could talk to Uncle Tony," she suggested, "I'm guessing this had something to do with that weird object. It might not be a teleporter but a time machine after all."

"You think he'll believe us?" he asked.

"Of course he would." she said confidently, "We just simply need to tell him enough secrets to prove it."

"We might need to stay longer than we intend to though." When his sister gave her a confused look, he continued on- "Dad said something about Uncle Tony being on a mission right? We need to wait for him to get back."

She groaned, mentally forgetting that part, "Ugh, you're right." She rubbed her face, "You know I just realized something."

"What?"

"If we are sent back in time.. and the person we just saw earlier is dad after all.." she trailed off.

James caught onto her meaning, "Then that would mean the rest of them is also living in this facility too."

"And since our parents are both an Avenger.."

The two siblings shared a look. "Then we'd get to see mom too!" Allie shrieked.

James had a puzzled expression, "Why do you sound so excited?"

"What? No! I'm nervous!" she declared, "Have you seen the movie where the kid gets sent back in time and accidentally disrupted his parents' meeting and put his existence in danger?"

His eyes lit up in recognition, "Oh! Back to the Future? Come on that's a classic! Of course, I know it."

Allie sent her a flat look, "That's not the point. The point is we shouldn't do something stupid enough to put both ourselves at risk."

"You're overreacting." James mused, "I'm sure dad and mom would find a way to each other no matter how much we change the timeline. Okay, saying that made me cringe."

She flicked his ear.

"Ow! Wha-what was that for?"

"You're annoying," she complained.

"I'm not," he rubbed his reddish-ear, "You just have nothing else to do."

She sighed, "I'm just scared and nervous."

"We both are," James said, giving her shoulder a light squeeze, "But we'll be back home before you know it."

Allie looked up at him.

"Trust me," he assured, ruffling her hair in the process.

She smiled but nodded anyway. They simply sat on the floor, their bodies pressed against the back of the couch. They continued to talk about random things until before they knew it, sleep had consumed them.

The two siblings passed out beside each other on the floor.

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If you're wondering why they're so surprised seeing Steve blonde, it's because what Steve looks like in 2037 is the hairstyle he has in Infinity War.

Comments and votes please? :)