A\N 1: So here it is, my new story. Thank you so much to my friends on Twitter and my beta reader for helping me and encouragging me to write this.

A\N 2: This story is slightly A\U as I'm taking the upcoming events of Chicago Fire season 4 (what we know from spoilers) but changing them to add my own storyline to it.

Disclaimer: I do not own Chicago Fire, Chicago PD, NBC, Global, Harry Potter, Disney or Pixar.

Warnings: None

Spoilers: None

Chapter One

"Now you two be good for Aunt Gabby and Uncle Matt alright. They're in charge for the week," Antonio looked at his fifteen year old daughter and nine-year-old son. He and Laura were going to Hawaii as a last effort to try and save their marriage. While they were away his sister Gabby and her fiancée Matt were going to look after the kids.

"We will be Dad," Diego smiled, "Can I use the boxing equipment in the gym?"

"You're not ten yet," Laura informed her son. "That was always the deal Diego. You can wait two more months."

He frowned but nodded anyways. His parents had been living separately for the past six months and he and his older sister had been spending most of their time with their mother; only occasional weekends with their father and some days when he wasn't working.

"Come here you two," Laura looked at her children, "I love you both. Like your father said you behave alright."

Eva nodded and walked up to hug her mother, while in her embrace she whispered, "You and Dad are going to work things out right?"

"We'll try," Laura, whispered back, "Come here Diego," She turned to hug her son.

"Thanks for watching them Gab's." Antonio hugged his younger sister.

"No problem Tonio," She kissed his cheek I need the practice, "I really hope this works," She lowered her voice, "I don't want to see you get a divorce."

"That makes two of us," He offered a light-hearted chuckle and turned to Matt, "Thanks Bro."

"Anytime," He shook his hand, still unsure about what the other man thought of him. They used to be very good friends but after he and Gabby had broke off their engagement almost nine months ago; and then just gotten back together two weeks ago he wasn't sure anymore.

"Well we should probably get going," Laura spoke up and turned to look at Gabby, "Thank you so much Gabby," She gave her an awkward, "You know whatever happens I still love you like a younger sister," She whispered.

"Thanks Laur," She hugged her back.

"Bye Mom! Bye Dad!" Eva and Diego waved as their parents walked into the terminal.

"Alright you two," Gabby grinned at her niece and nephew, "How about we go and grab some pizza and then go and watch a movie?"

"Is Uncle Matt coming too?" Diego asked despite Eva poking him,

"Yeah Bud I'm coming," Matt got into the passengers seat.

"Cool," He grinned.

"Can we watch Harry Potter? The last one?" Eva asked.

"Good idea," Diego tuned to his older sister who was sitting beside him in the mini-van.

"Thanks," She fist bumped him, which causes both Gabby and Matt to let out a little chuckle.

"I feel like Thai food," Gabby announced as she began to drive out of the airport ant onto the highway. Would you two be okay with that instead of pizza?"

"Thai food? I don't think I've had that before."

"It's really healthy, I had it at Maddie's house." Eva told him, "It's kind of like Chinese food." She knew her younger brother had that before.

"I guess," Despite his mother, Abulela and aunt all being wonderful cooks he wasn't all that keen on trying new foods.

"Tell you what Diego," Gabby looked at him through the rear-view mirror, "You try it and then we'll talk about you getting something else."

"What if I say I don't like it if I do?"

"I know you well enough to know you won't do that." Diego was a good kid, very smart and well mannered; He was raised better then to directly lie to anyone, especially an adult,

"Okay Aunt Gabby," Diego nodded and then began to play on his mother's IPad while Eva texted and listened to music on her phone.

"Can they hear through those things?" Matt looked back at the children and then to his fiancée.

"Why?" She raised an eyebrow,

"Just wondering," He put a hand on her knee, "I'm glad we're getting back to normal."

"Yeah," She bit her lower lip. Things were far from normal. Matt had been kidnapped and beat up for two days before the police found him, and that was only two weeks ago. He was getting department mandated help from a psychiatrist but Gaby knew it wasn't doing any good. Matt was just to angry to let anything out. That was one of the reasons she'd been hesitant to take up his offer of helping him out with Eva and Diego; but he loved kids and she loved seeing him with them.

"Aunt Gabby," Eva took out her ear buds, "My best friend Sara told me she's having a party tomorrow night, can I go?"

"Your parents never told me anything about a party."

"That's because I forgot to tell her I was staying here this week. I always forgot to mention it last week at school." To make their parents separation easier on her and her brother they hadn't switched schools. They'd tale the train in withier their mother every day and they'd go to school while she'd go to work at her bakery.

"I'll have to think about it Eva, Did your parents know about this party?"

"No! Aunt Gabby you can read my texts and my deleted texts. Her parents are going to be there and there's going to be drinking but it'll be controlled.

"I'm glad you told me about the drinking Eva but I think I need to talk to Sara's parents first. I'll give them a call when we get home."

"Okay," She grinned and put her ear buds back in.

"You're a natural," Matt complimented, "Fair but strict. You're going to be a great mother one day."

She momentarily froze; does he know? No, how could he? I haven't told anyone yet. "Thanks."

"If Eva's going to a sleepover then can I have a friend over?" Diego asked, "Or can I stay with Uncle Matt and his friend Kelly"

"You don't know Kelly very well," Gabby eyed her nephew.

"I know but I think he's probably cool.'

"He is bud," Matt confirmed, "He's my best friend."

"Like Dad," Diego decided, "So, can I Aunt Gabby?"

"We'll see Diego," Gabby told him.

"Okay," He nodded and went back to playing his game.

They reached Gabby and Matt's favourite Thai food restaurant in thirty minutes and picked up the order they'd call in while they were on the highway. Another fifteen minutes and they were at Antonio's house, or the house Eva and Diego had grown-up in.

"I'll go get the movie!" Diego raced into the house after Gabby opened it and ran to set up the movie in the family room.

"Can we eat and watch the movie?" Eva asked.

Gabby knew Antonio's rules about mealtime, as they were the same ones their parents had. Only on very rare occasions were Eva and Diego allowed watching TV and eating dinner. Dinner was family time and time to spend together. Gabby believed that as well but knew her niece and nephew needed a break.

"Sure," She smiled. Why don't you go and get some plates, napkins and cutlery from the kitchen."

"Sure," She grinned and went off in the direction of the kitchen.

They all settled in the family room on the six-seat couch. Matt wrapped his arm around Gabby and gently pulled her into him.

Neither Eva or Diego noticed as they were to busy watching the beginning of the movie and eating their dinner to notice. As Gabby had suspected Diego liked most of the food and ate a lot of the Pad Thai, Fried Rice and the steamed vegetables.

"Can we have the cake I made for desert?" Eva asked as the food was all eaten and the movie was half way finished.

"Sure," Gabby nodded, "You and Diego go cut four pieces and bring them back."

"Okay, come on Di, you can pause the movie," Eva taped her brother's shoulder.

"I'm coming," He paused the movie and followed his older sister.

The cake was vanilla based with a cream filling and neatly decorated circles and stars with the icing were on top. Eva had taken a picture of it earlier in the day. She cut into it and put four big pieces on a plate and then she and Diego carried them back out into the family room.

"I really hope its good," Eva said, "I made it completely on my own."

"Well let's see," Matt cut a big piece off from his fork and tasted it, "This is delicious Eva!"

"You're not just saying that?"

"No, no Eva this is great," Diego took two huge bites, "You could work in Mom's bakery full-time."

She laughed, "Well I think I need to finish high school first. Only two more year after this one though."

"Wow," Gabby shook her head, "You're in grade ten, I can't believe that."

"Well believe it," She grinned, "And Diego's in grade five."

"I know," Gabby, said, "You two are growing up so fast."

"Oh no Aunt Gabby don't get all mushy," Diego made a face and quickly put the movie back on.

"Oh," Gabby laughed, "I'm sorry Diego." She continued to eat her cake and settle back into Matt.

The movie finished about an hour later and a quick look at her phone told Gabby the kids still had a another hour or so before bed, "Alright you guys, go and start a load in the dishwasher and then we can watch a short movie or see what's on TV."

"Ooh how about Toy Story. Aunt Gabby don't you like that movie?" Eva began clearing the table.

"Yeah, we can watch it if you two want too."

"Its such a cute movie," Eva smiled, "I like kids movies. I don't mind watching them when I babysit.

That's good, Gabby thought to herself and resisted the urge to place her hand over her baby bump. "I'll start the movie and then pause it until you two are finished."

"Okay," Then both agreed ad went into the kitchen to start cleaning-up.

Once Toy Story was finished Diego was almost asleep and Gabby had to help support him in walking up the stairs. He brushed his teeth and climbed into bed without even changing his clothes. "Good-night Diego," Gabby kissed his forehead and closed the door to his bedroom before walking back downstairs where Eva was still awake.

"Eva," Gabby looked at her niece, "It's nearly nine thirty, and I know you don't have a bedtime anymore but I know you usually do go up to you room. And I know the electronics off rule at ten."

"I don't like that rule," She sighed.

"Yeah but the light affects you getting to sleep. Now go upstairs and get changed into some pyjama's alright."

"Yes Aunt Gabby," She gave her a hug and a kiss and hugged Matt before heading upstairs.

"So, I know you have shift tomorrow so I was-" Gabby was interrupted by a knock at the door, "Who could it be at this hour." She looked at Matt and together they made there way towards the front door. Gabby opened it and saw Antonio's Sargent. She had the sinking feeling it was not going to be good news.

TBC

A\N: Please leave a review and let me know you thought and if I should continue or not.

Up Next: Voight talks to Gabby and Matt and things drastically change.