James strode into a swanky hotel in Geneva, Switzerland wearing jeans and a button-up collared shirt. He waltzed up to a young woman with long blonde hair working at the check-in counter and pulled off his sunglasses, tucking them into the pocket of his shirt, "Bonjour, Magnifique."

"James, what the hell are you doing?" Steve barked as he grabbed his son by the shoulder and pulled him away from the receptionist who looked at the large blonde man with surprised eyes. "Checking in, Steven Carter. Should be two connecting rooms."

The woman nodded, understanding his English perfectly. She occasionally eyed the child who winked up at her. She gave him a skeptical glance, "here are your room keys Mr. Carter. Let us know if we can do anything to make your stay more comfortable," she replied in a thick Swiss accent. Steve nodded his thanks and turned to walk away, but not before his son could say his own goodbyes.

"Au revoir, mon amour."

Steve pulled his son away from the pretty woman, groaning as he met his wife and daughter in the elevator. "Since when does your son know French?"

"I don't know?" Kay responded lightly with a shrug, fixing her red lipstick in the mirrored wall. Her green eyes darted to meet Steve's blues with a smug look, "You speak French, don't you?"

Steve narrowed his eyes at his wife before looking down to see James plugging his headphones into his iPad and hitting play, letting the Learn French app continue. Steve made a reach at the iPad before Kayla slapped his hand away, all while Sarah stood between them awkwardly with her hands in the pockets of her red overalls. She swayed forward and backward, using all her willpower to not tell her father that James was using his credit card to pay for his French lessons online.

When Kayla opened the door, James shoved past Sarah and claimed the bed by the window, and Sarah climbed onto her parent's bed and snarled at her brother, "I don't want to sleep by the window again."

"Too bad, because I claimed it."

"Dad!"

Steve looked at his wife and Kayla offered an amused expression in return. He groaned and turned to the children who had begun yelling over each other. "Sarah, you and your mother can sleep by the wall, I'll take the window with James. There, you happy?"

"Very. I don't want to sleep with her anyway!" James stuck his tongue out at Sarah and she crossed her arms and stuck her nose in the air, facing away from her brother. James mimicked her action mockingly, "Girls are gross."

"Music to my ears." Kayla hummed under her breath as she placed her suitcase on the bed. She pulled out a tiny pillbox and popped open one of the slots, handing the medicine to her daughter, "Take your allergy medicine please."

Sarah groaned loudly and took the pill to the bathroom to grab a glass of water. She looked in the mirror as she swallowed, not realizing that she was far too young to have such issues. Sarah played with her hair until a fit of coughing erupted from her throat. She grabbed onto the edge of the sink and squished her eyes closed, trying to catch her breath. It was Steve who appeared in the doorway to check on her, kneeling down quickly to get to her level, "Are you okay?"

"I hate that I'm always sick. James isn't sick. It's the worst." Sarah wheezed, and Kayla appeared in the doorway to hand Steve the girl's inhaler before going back to finishing unpacking the kids' suitcase. Sarah took the inhaler as her eyes watered. When she'd gotten a hold of her breathing, she handed the inhaler back to her dad, "I just wish I was better. I wish I didn't cause so many problems."

"You don't cause problems, Honey," Steve assured the girl as she sat on the toilet lid, scuffing her feet against the tile.

"I mean, not like James, but it's still frustrating."

"I heard that!" James yelled from the other room and Sarah rolled her eyes at him as she smiled at Steve.

Steve shook his head, but he couldn't shake the smirk on his face, "Your brother doesn't cause problems either. You two are perfect. Don't ever change." Steve fussed up Sarah's hair and stood, groaning a little as he did. He stretched his arms, tired from the plane ride from Italy. "Come on, let's spend some time with your mom and brother before the conference starts up again tomorrow."

"We're gonna hang out with Aunt Tess, right?" Sarah asked as she followed her father out of the bathroom. She sat down next to Kayla on their bed and the redhead grabbed her daughter in a loving hug.

Steve looked out the window as James continued learning French on his iPad, "Yeah, if they ever get here."

The stewardess heard the quiet moan before the loud crack, but it was the hiss that followed that made her knock on the lavatory door, "Everything okay in there?"

"Yeah, I'm fine! I'm just trying to change! Sorry!" Tessa called as she held her hand to Bucky's mouth, which was inches from her neck. Her bra strap was loose against her arm, and her skirt was hiked up around her waist. It was cruel how put together Bucky was when she was in such a disheveled state.

The stewardess pulled her lips into a thin line, "Alright, well, be careful please." She looked over her shoulder, pausing for just a moment, then continued on through the cabin of the plane.

"They're gonna kill us when they find out we missed our connection in Munich." Tessa hummed as she released Bucky's lips and he went to work sucking on her skin. "Maybe we should have taken the train with them."

"No." He moaned into her neck as his hand trailed down to her chest, "It's safer for us to travel separately."

"You used me as a battering ram against the sink."

"Sometimes I forget you're more... breakable than me." Bucky chuckled and Tessa groaned as his hands moved down to her thighs. "If we traveled with them, do you think we could do this?"

Tessa looked down at her smart watch and her eyes widened, "We're landing in twenty minutes."

"So we have twenty more minutes..."

"Umm, I'm a mess. You need to leave so I can freshen up." Tessa ordered and Bucky pouted, kneeling down to press kisses down her stomach. When he reached her waist he gently grabbed the hem of her skirt and pulled it down, then reached for her discarded shirt on the ground. She smiled down at him as she kept her hand tangled in his hair, "Thank you."

"You're welcome. I can be a gentleman. When it suits me." Bucky winked and pressed another firm kiss to Tessa's lips. "I'll see you when we land."

Tessa buttoned up her blouse as Bucky reached for the lock, "I love you."

His head shot up and he turned around to look at Tessa, "What?"

"I love you- James Buchanan Barnes. I love you so much." Tessa admitted as a blush crept into her cheeks. "I haven't said that to anybody since Ryan."

"I love you, too," Bucky said quietly, looking down at his left arm. Tessa frowned when she saw how anxious he looked, but he continued before she could ask, "I just don't want anything to happen to you. I'd never forgive myself."

"The feeling is mutual," Tessa said as she stepped closer to the soldier, pulling her long hair to the side. "After this, Steve and Kayla are done. What about you?"

Bucky looked in the mirror, and Tessa followed suit, seeing them pressed together in the small space, "I could be done too." Tessa grabbed his cheek, and he kissed her quickly, then fled the bathroom to go back to his seat, just as the pilot announced they would begin their descent into Geneva.

"So I'm taking the kids to Vielle Ville to look around and get lunch, then we'll spend the rest of the afternoon here at the hotel reading. Right kids?" Tessa asked over her shoulder as she explained her itinerary to their parents.

"As long as there's food I'm in!" James called back and Sarah gave a thumbs up without looking at Tessa, too enthralled in her doodling to draw her gaze away.

Kayla nodded as she pulled her long hair back into a bun on top of her head, "Sounds like a plan to me. Just, uh-" She looked at the kids then leaned in to whisper, "Keep them away from the university. Let's not have another Colosseum incident."

"That wasn't my fault. Steve's itinerary." Tessa pointed at the blonde man as he laid in the bed with James, looking over the boy's shoulder as his son studied French.

"Well, hopefully this time we'll be better prepared. Shuri sent us with some of her more under-the-radar weapons. Something a little more extreme than what we had." Kayla explained under her breath, "I just worry about them. I kinda think this whole thing was a mistake. Rome was a disaster."

"But this won't be. As you said, you'll be better prepared." Tessa assured Kayla, but the woman wasn't listening, "What are you going after?"

"Sam sent word that Hydra's top scientists are en route to Geneva to steal a bio-weapon. They believe it's a super-soldier serum, which tracks for Hydra." Kayla mumbled and passed Tessa to enter her room. She sat on Tessa and Bucky's bed, spreading out as she stretched. "So..." Kayla trailed off, "How are you and Barnes?"

"Good! We are good! Things are... good." Tessa stammered as the color red stained her cheeks. She latched her hands behind her back and twisted her lips to the side as Kayla smirked up at the ceiling.

"That's good. You both deserve a win."

Tessa took a step closer to Kayla, but upon closer inspection, it was clear she wasn't thinking about Tessa's love life anymore.

"You ever worry about him staying young forever?"

"Excuse me?" Tessa asked, taken back by the blonde's quick change in subject.

"I mean, they are over one hundred years old. Who's to say they won't stay young forever." Kayla said to herself. She twisted her wedding ring in her right hand while she bit the inside of her cheek. "It's just something I think about sometimes."

"I mean, it's come up in conversation, but Bucky understands what happened to him about as well as I do. You though, you studied the serum, did you not?" Tessa inquired as she took a seat on the bed.

"I did." Kayla confirmed slowly, "Which is why I'm so nervous now."

Tessa stared at Kayla for a moment, trying to get a read on what was bothering her. Something about the serum? Something that would affect Steve and Bucky?

And her.

"Hey, your kids are ready for bed. You should get some sleep for tomorrow." Bucky said as he leaned against the doorframe of the adjoining rooms. Kayla nodded and sat up easily. She gave Tessa a short wave and touched Bucky's arm as she passed, closing the door between their rooms without a word.

"She's acting strange," Tessa observed while she watched Bucky, trying to see if he agreed.

He just pulled the sheets open and sat on the bed, pulling open Tessa's side so they could both get some sleep.

Kayla adjusted the black bob wig on her head as she pressed bright purple frames farther up her nose. Her lab coat was buttoned sloppily as she raced through the front door of the Geneva University Hospital. She nodded her greetings to the other doctors as she moved quickly toward the elevator, swiping a key card off of a woman moments before the doors closed. "I'm in."

"Meet us on the roof?"

"You got it, Doctor Rogers." Kayla cooed as she kept her finger pressed to the door closed button. She watched as the numbers above the door rose and rose until eventually, she reached the top floor. The door opened and Kayla moved to the stairwell, pressing the key card to the pad to unlock it. She sprinted up the stairs and flung open the roof door to let Steve and Barnes into the stairwell.

"Any sign of Hydra?" Kayla asked as Steve pulled a lab coat over his suit. Bucky looked up from unpacking his bag and stowing it behind the door leading to the hospital.

Steve shook his head and tossed Bucky a suit jacket to pull over his white dress shirt, "Nope. Everything's quiet. But Sam is sure what they're looking for is here."

"I don't like this. I don't like this at all." Kayla told the boys as they finished putting together their disguises. "We could just take it."

"No. If it's what we think it is, we render it useless. If they think it doesn't work, they won't try it again." Steve explained, grabbing Kayla by the hip and pulling her toward him. "Buck has all the materials you could ask for. You get in, check it out, tell us what you need. Then we move on."

Kayla grabbed the briefcase out of Bucky's hand and backed up away from the men, "I'll take it now. Keep an eye out for the Medranos." Kayla opened the door and twirled her way back out into the hallway toward Biosafety Level 4. Several minutes later, Steve burst through the door looking at his pager before looking up at a map on the wall to find an exit point for his team.

Once Steve was gone, Bucky moved from the stairwell to the elevator, hitting the button for the bottom floor before adjusting his tie. He walked out the front door and found a spot at a little cafe across the street. "I'm in position. Keeping an eye out for our scientists." He pulled out his phone to see a picture of two Hydra scientists, a tall brunette woman and her husband. "Be safe you two."

"Yeah, yeah, yeah," Kayla mumbled as she reached the lab, pressing her ID card against the door. Her green eyes darted around as the door unlocked. At the sound, Kayla twisted the handle and pushed it open, closing it quickly behind her. She looked around before grabbing a pair of goggles and rubber gloves and an apron that she pulled over her lab coat. Kayla puffed out her cheeks and pursed her lips as she turned her attention to the vials in front of her behind a thick pane of glass. She gently cracked the lock and pulled open the glass before studying the vials, realizing she couldn't figure out which one was the one she needed. "Shit."

Bucky sipped his coffee slowly as he tapped his gloved fingers against the wooden table. Suddenly, Bucky noticed a couple entering the hospital that looked similar to the people in his photo, "Guys, we've got company."

"Well I'm gonna need you to stall because we have a problem," Kayla muttered as she studied the vials. She knelt down and studied two of the vials, both a foggy clear liquid. A third vial was held behind the other two, but it appeared to be empty.

"They are already in the building, Steve? Can you assist?"

"I'm on it," Steve said as he swung around the corner to the elevators, waiting patiently for one to take him down to the lobby. He tapped his foot as he waited, looking around nervously before looking down at his watch. Suddenly, the elevator dinged and a husband and wife team exited toward him. Steve paled at the sight of them, realizing it was Izetta and Osvaldo Medrano, Heads of Hydra's Science and Experimentation Department. Steve's Adam's apple bobbed up and down as he took in the pair, but they were on a mission. "Excuse me!"

Izetta turned and looked at Steve, shamelessly looking him up and down before answering, "Can I help you?"

"You and your husband... won the Nobel Prize in 2013 right? For your work in vaccinations for infectious diseases?" Steve questioned and the curly-haired man looked up at his wife nervously. Izetta narrowed her eyes at Steve, but his question didn't seem to faze her as much as it did Osvaldo.

"Yes. That is us. It's why we are here. Now if you excuse us, we have work to do." Izetta took a step around Steve, but he blocked her, and the woman stared up at him angrily, "Is there something else I can help you with?"

"Umm..." Steve stammered, trying to come up with a reason to keep them with him instead of finding his wife. He looked down and saw that Osvaldo was carrying a briefcase, but Izetta appeared to have a weapon. "What are you working on?"

"They asked us here to help them with a vaccine. That's all I can share. We don't have a lot of time. We have a flight to catch in an hour, so, if you could- move."

Kayla clenched her teeth as she plucked the first vial from its spot in the case, hearing that Steve was running out of material to stall the Hydra scientists. Kayla held the vial with one hand and knelt down, unbuckling her briefcase with the other. She gently pried a green liquid in a syringe from her case and plunged the needle through the cork top of the serum. The hospital clearly didn't want anybody getting into the vial easily, but that wasn't a problem for Kayla Rogers. She quickly put the vial back and reached for the second one, but before she got a chance the door behind her clicked open.

Kayla pulled the glass case closed and darted away, somersaulting behind a metal table just before Izetta and Osvaldo entered into the lab. Kayla knelt down and watched between several beakers and jars, waiting to see which vials the Medranos would take. Then a familiar voice brought her out of her focus as she heard Steve babbling from the doorway, trying to distract them as long as possible.

"Are you sure there's nothing I can do to help-" Steve stopped when he realized the lab was empty. He looked around, but couldn't find Kayla anywhere.

"No. Leave, or we'll make you leave." Izetta threatened with a roll of her brown eyes. She grabbed a pair of gloves and goggles, then handed another set to her husband. "While we appreciate your interest in our work, we really must be going. What we're working on is going to change the world."