"Sister?" all but Numbuh 1 echoed.

Wally who was called Numbuh 4, "Jacey!!!"

"Yep, Jacelynn Uno at your service! But call me Jacey!" she grinned while bowing, adding a wink at the last part.

"Jacey?" Abigail, who is also Numbuh 5 says, "Wait. You know her, Numbuh 4?" 

Wally said, "Yeah. She's my babysitter."

" How did you get in here?" Numbuh 1 demanded.

"Easy there.... I just took out this little wire and everything else was just for fun. Although, I think I may have gone a bit overboard. Sorry, guys!" She giggled, crossing the room to untangle Numbuh 3 and 4.

"I didn't mean to ambush you, I just wanted to see where Wally, ahem... Numbuh 4 was at."   

"My cruddy babysitter is your sister?" Numbuh 4 glared and 1.

"My sister  is your babysitter?" Numbuh 1, pushed his shades back up his nose, "Wait, Jacey, I thought you were visiting tomorrow night?"

"I was, but I came back early and got an overnight babysitting job ready to surprise Mom and Dad tomorrow. But I honestly never would have thought that this little tyke was in your clubhouse." She tousled Numbuh 4's hair before moving to untie 2 and 5.

"Y'know you should have told me that you'll be going to your friend's place rather than sneak off." Jacey said to Wally which he looked away.

"You know about the KND?" Numbuh 2 cried as she helped him back to his feet.

"KND? I've heard about it....The way you kids going up against teenagers and adults. I must say. That was very cool." She commented.

"Numbuh 5 has to admit she's impressed that you took us down." Numbuh 5 nodded, shaking Jacey's hand.

"Thanks. You too. For someone who is young."

"So how did you know about Numbuh 1 if he didn't know about you?" Numbuh 3 asked, tugging on Jacey's jeans.

"I have my ways, I've gotta keep an eye on little Nigel haven't I?"

Numbah 1 shuddered with distain, he hated his sister. Ever since he could remember, he had always been compared to her. She was the golden child in the family. She wasn't that hard to look at, she always had top marks in her class, she did volunteer work, she had a job and now she was in university making everyone proud. She even achieved her dreams which is travelling around the world.

 The only thing that made him feel better than her was his leadership in the KND. Now here she was blowing that up in his face and showing off, but how could he knowing that he was going to be compared to her again. Or worse, She's going to upstage him! He looked at his friends, his teammates, swarming around her like she was some goddess. It was humiliating and disgusting.

"Well it's been nice you dropping by, but if you don't mind we have a mission to plan for." Numbuh 1 said, slowly pushed his shades to the bridge of his nose, narrowing his eyes.

Jacey nodded, "Sure thing. Look, I know this sounds rude but do you mind if I stay, I'm not going to get in your way or anything but..." she tousled Numbuh 4's hair again making him grit his teeth, "I'm still on a babysitting job."

"Can't you just tell my parents I was there and everything was fine like every other babysitter?" Numbuh 4 snapped, smoothing his hair down.

"I could, but I can't really expect to get paid for something I haven't done, lying isn't my thing."

"Hold up....How do we know you won't turn against us since your a teenager? And you know about us KND an all." Number 2 said suspiciously.

Jacey rolled her eyes, realizing what he meant, "Look, I'm not like those other teenagers whom you hold a grudge. I don't care about your history about teens and adults. I only care is taking care of kids and have fun."

Numbuh 4 said surprised, "That's it?"

"That's it. Beside, I'm just the part-time Babysitter. Now you all know me, I want to know all of you since your Wally's and my little brother's friends. What are your names?"

They glanced at each other, unsure whether to tell her which it was unfortunate that Numbuh 3 came up to her. "I'm Kuki, Nice to meet you, Jacey. Do you like rainbow monkeys?" She introduced, much to her team's shock.

Jacey awed by her cuteness as she replied, "Honestly, I do like rainbow monkeys, I sometimes buy keychains but don't tell anyone. Hey, I even brought rainbow monkey gummies, I was planning to share it with Wa-I mean Numbuh 4 but you can have it." bringing out a pack of gummies.

Kuki smiled as she munch on the gummies. Jacey notice the strange looks on their faces as she shrugged, "What? I always carry it with me when it comes to kids."

Numbuh 2 and Numbuh 5 introduced themselves as Hoagie and Abigail which she was nicknamed Abby. 

"Well, It's nice to meet you all." Jacey said happily.

Nigel said, feeling annoyed, "Yes, it sure is. Now, are you going to leave or what?"

"If you insist." Jacey was about to leave when Kuki grabbed her hand then turned to Nigel. "Can she stay Numbuh 1, please?" Numbuh 3 cried, clasping her hands together.

"Yeah! I'd love you to take a look at some blueprints I've been working on!" Numbuh 2 beamed.

"Numbuh 5 doesn't have a problem with that." She said, flicking her cap.

Numbuh 1 glanced at 4, who folded his arms and huffed, at least one person was on his side. But still, they were outnumbered. He sighed and nodded, turning away from them and returning to his work. This day just kept getting better and better. He looked up to see an yellow-green figure standing next to him. Numbuh 4 was glaring out of the tree-house, arms folded and muttering to himself. The two tried to ignore the laughter and the introduction of KND, mission story swapping behind them and tried to focus on the plans for stealing the Delightful's birthday cake. It was simple enough on paper, but how would it cope in action?

Their thoughts were interrupted by the room plummeting into red flashing lights and alarms blaring. Up on the screen, a image of one of their enemies was entering their neighborhood. Numbuh 1 turned on his heel and nodded to his teammates who were already prepared in battle stance. They made their way down to the landing bay and piled into their vehicle and took to the sky. Numbuh 1 handed the controls over to Numbuh 2 and turned to face the rest of his team. He noticed something... good.

"Where's Jacey?" he asked.

Everyone looked around in confusion.

"Alright, we ditched her!" Numbuh 4 cried, pumping his fist n the air.

"Hello!"

"AGH!"

He jumped out of his seat and was sent rolling onto the floor as Jacey's head popped up over his shoulder from behind his chair and called in his ear. She got out from her hiding place and was given a high-five by Numbuh 3 and a nod of approval from 5.

"If you think you can ditch me, better luck next time. Lesson; Try not to underestimate a babysitter."

Jacey winked at him and took a seat at the back, not wanting to intrude any further. She sighed to herself; things had not gone according to plan. She understood why Numbuh 4 didn't like her; it went against everything in his nature to trust a teenager, especially Numbuh 1. But the others had accepted her, but surely Numbuh 4 wasn't that wrapped up in his work to turn against her too?

"So who's the guy we're after?" asked Numbuh 5.

"Count Spankulot." Numbuh 2 answered.

"Count Spankulot? If you ask me, he would rename himself Count Dorkula." Jacey said with amusement, causing the others to snicker in laughter. She can hear Numbuh 4 chuckled before getting into his serious face. Numbuh 1 just rolled his eyes in annoyance.

"Kids Next Door, Battle stations!" Numbuh 1 yelled.

Jacey watched in awe as the group jumped into action. Numbuh 2 steered the ship to the right so that everyone was tilting to the side. Numbuh 4 and 5 opened the side windows and leant out as far as they dared, shooting marbles and chilli peppers at the shadowed figure flying along side them. Numbuh 3 got into place behind a computer device and brought the Count up on radar. The screen flashed green as it locked onto its target.

 She gave the signal to Numbuh 1 who slammed his fist down on a large button in front of him. The ship rumbled as a large water balloon was released from underneath them. A horrible smell hung in the air; Jacey breathed it in which made her gagged but smirked in admiration at the team, garlic juice, impressive.

The balloon hit the target straight on, the Count was soaked to the skin as he cried out in pain and spiraled downwards to the ground. Numbuh 2 turned the ship around and came to a landing. 

By the time everyone had piled out, weapons raised and sprung into action. She used her yoyo that she always carry for fun as she wrapped around Count tightly then pulled him, letting him to roll over to her face. He caught sight of her recognition.

"You?! But you're supposed to be working with ---"

She cut him off by shoving the boxing glove she took from Numbuh 1 into his mouth, "Sector V, he's all yours."

Numbuh 1 said, feeling irritated, "You know I had him?!" while his teammates were awe by her action.

"Sorry." She shrugged.

His teammates tied him up and called into H.Q with the co-ordinates of where to pick the Count up. As they piled into the ship to return to the tree house, Numbuh 3 tugged on Jacey's jeans.

"Who did he think you were working for?" she asked.

Jacey shrugged, "I don't know, maybe he thought I was on his side or something, being a teenager and all. Though, I'm not sure what he meant by working."

Numbuh 1 and 4 exchanged glances and were surprised to find Numbuh 5 chewing her lip in suspicion too. Something was quite right here...