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Disclaimer: I don't own Teen Wolf nor do I own the characters

The sheriff took the news well. If you count him passing out well, then, yeah, he took the news well. The pack were currently in the Stilinski Household waiting for Mr. Stilinski to come too. They were spread out throughout the room, the sheriff sprawled out on the couch. Stiles stood by his dad, little hands grasping at the Sheriff's badge. "Daddy be okay?" he asked.

Derek took a deep breathe, "He'll be fine," assured the Alpha.

Stiles looked around the room, brown eyes scanning the area, "Where my mommy?" he asked softly.

Scott took in a sharp breathe, "Well..Stiles..you see.."

The little boy looked at him, "I no see her?"

"How exactly do we tell a four year old that," Scott paused as his eyes shifted around the room, "how do you tell him that M-O-M is G-O-N-E," he finished as he spelt out the words that would surely cause a big melt down.

"Let's wait till John wakes up," Derek suggested, "we'll ask him, and we will go from there."

John shifted from the couch, "Stiles," he groaned.

Stiles' eyes lit up, "Dad?"

The sheriff turned over and eyed his son, his son who was now four years old. The elder took in a deep breath and reached over running a hand through the boy's hair. Stiles smiled at him as he reached up and gripped his dad's wrist, "Daddy?"

"Yeah?"

"Where mommy?"

John's heart skipped a beat as he sat up quickly, eyes scanning the room as he tried to search for an answer. "Calm down," Derek whispered out quickly, "he's going to pick up on that."

"Mom's not here right now," John answered, voice cracking.

Stiles raised an eyebrow, head tilted a bit, "She go somewhere?"

John nodded, "Yeah, she..she went on a trip for work."

"Oh, okay."

"Hey do you want a snack?" John asked his son.

Stiles nodded, "Yeah, please?"

Allison stood up from the couch, "I'll go with you, how does that sound?"

The little boy bit at his lip his eyes gazing at Allison, giving her an apprehensive look. He looked towards his dad then too Derek. He approached the dark haired man and tugged on his shirt. "She nice?" he whispered softly.

Derek nodded, "Yes, she is, she'll take good care of you."

Stiles approached Allison and took a hold of her hand, "Okay," he answered.

Once they were out of ear shot John looked at the others who were spread across his room, "So let me get this straight," he breathed, "Some person in a cloak turned my son into a four year old to teach Derek a lesson?"

Everyone nodded.

"And you don't know what this lesson is?"

Everyone shook their heads, "No," Derek answered, "I don't know what it is."

"So once you learn this suppose lesson, he'll return back to normal?"

"Yes," Derek answered.

The Sheriff threw himself back into the couch and ran a hand through his hair letting out a gust of air, a frustrated growl emitted from the man's chest. "He doesn't seem to know anything," Lydia spoke.

"Yeah, which is why we will stick with the story about his mother," the Sheriff said.

"No arguments there," Scott agreed.

"This might be a bad time to say this but at least this is happening during summer vacation," Danny said with a slight grin.

Derek rolled his eyes and shoved him and Jackson let out a laugh, "He's right, because explaining the absence of one Stiles Stilinski will be hard," the blonde agreed once he calmed down.

"On that note, Derek, you'll have to stay here," the Sheriff ordered, "since this involves you."

The Alpha groaned and Lydia smiled as she said, "Besides, he seems to like you anyways."

Derek woke up to the smell of coffee. He snapped his eyes taking in his surroundings. He was in one of the guest rooms of the Stilinski household. The lycan stood up, slipped on his t-shirt and made his way downstairs. Derek let out a silent groan when he saw that Stiles was still the same. The sheriff nodded to him in greeting as he continued to make his coffee. "Hey," Derek mumbled as he made his way around the table.

Stiles scooped a spoonful of cheerios into his mouth, "Erk," he called out.

"Don't walk with your mouthful son," the Sheriff reprimanded

Stiles nodded as he finished munching his cereal he turned around and said, "Hi Derek!"

Derek managed a smile, "Hey Stiles," he mumbled.

Derek let out a sigh as fixed himself a cup of coffee. They stood and ate in silence for a while. Stiles being the only one making noise as he munched on his cereal, talking to himself. "You'll need to buy him clothes and well toys because he'll need to entertain himself," the sheriff said as reached into his pocket to get his wallet.

Derek shook his head, "No, it's okay I got it."

The Sheriff nodded, "Right, so I'll pay you back then."

"No," Derek rushed out, "I owe you and you helped clear the murder charges that were against me."

"Alright well then I guess I should also it slide that you'll be driving to the store without a booster seat."

Derek groaned, "Oh shit-"

"Bad word!" Stiles hollered.

The Sheriff laughed, "So I'll see you guys later tonight."

"Yeah."

Stiles dropped his spoon, "Daddy where you going?"

"I got work," the Sheriff answered as he approached the table, "You be a good boy for Derek."

"You come back?"

"Yes, I'll be back tonight okay."

Stiles nodded, "Kay."

John leaned down placing a kiss on top of Stiles' head, "I love you son and like I said, you be good, listen to Derek okay."

"Love you too daddy and I promise I be good."

Derek made sure he locked the front door before he followed Stiles down the drive way towards the Camaro. He carefully placed Stiles in the backseat, "Okay," he said, "you listen to me."

Stiles nodded.

"No running off, you need to make sure you are by me at all times got it," Derek ordered firmly.

Stiles nodded again.

"Okay good."

"Derek?"

"What?"

"I suppose to be in a booster seat."

Derek groaned, "I know, I'll get you one at the store okay."

"But but daddy say it not safe if I'm not in a booster seat."

The Alpha exhaled loudly, a hand coming up to ran it towards his hair. Stiles was smart and sharp even when he was four years old. Is that even possible? "I know," he forced out through gritted teeth, "that's why when we get to the store I will get you one."

"Promise?"

"Yes Stiles!" Derek barked as he slammed the door shut and made his way to the driver's side door.

Derek gripped at the steering wheel as he reversed out he looked into his rear view mirror glancing at the little boy who sitting in the back seat. Stiles was looking down in his lap, hands closing and opening into fists. The Alpha wolf exhaled loudly and Stiles slowly spoke, "You mad?" he asked quietly.

The words hit Derek hard. He didn't know why, but it hurt and caused his heart to ache in his chest. He turned his attention back to the road trying to focus which was difficult. Stiles was emitting a wave of sadness and confusion. He really needed to sort out his anger issues. Not that he had anger issues. Well he did, but it was a work in progress, he was working on trying not to snap and to calm down and think things through. And it wasn't Stiles' fault, the kid was four. The lycan looked into his rear view mirror again, Stiles was still looking down in his lap. "Stiles," he said in what he hoped was a calm voice.

Stiles lifted his head up, "Yeah?"

"Not mad okay, just, I'm just frustrated."

"I sorry."

"Not your fault," Derek exhaled.

"Kay," Stiles whispered.

"This is going to be harder than I thought," Derek mumbled to himself, "this day just couldn't get any worse."

The Alpha regretted saying those words because he swore on his life that Stiles was by him when they entered the store. He was sure Stiles was by him when they were looking at clothes and when he allowed the boy to pick out a booster seat. But now he couldn't find him at all. The four year old was nowhere in sight. Derek tried listening for him, hell he tried to pick up on his scent but there were so many noises and other smells in the air the it fogged his mind. "Stiles," he called out.

Derek bit at his lip as his heart thudded in his rib cage. He could hear it, the blood rushing in his ears, his skin crawled with panic and fear. The lycan left the cart in the booster seat aisle and began looking for Stiles. He looked left, hoping the boy wandered down the aisle that held the baby blankets. Nothing. "Stiles," he called out again.

Nothing.

The fear in Derek's body began to escalate as he walked further down and found himself nearing the toy aisle and the electronic section of the store and Stiles was nowhere in sight. "Stiles," Derek called out again.

Nothing again. Derek bit at his as both hands came up and he ran them through his hair. He tried again, straining to see if he hear Stiles amongst all the other noises. That's when he heard it. Stiles was also looking for him. "Derek!"

Derek turned around, the Alpha let out a sigh of relief as the little boy ran towards him. Derek embraced Stiles in a tight hug, "Don't you do that again," Derek reprimanded, "you hear me Stiles?"

Stiles nodded as he whined against Derek's neck. "God," Derek mumbled, "I thought I lost you."

"I sorry," Stiles mumbled, "I was looking at books," the four year explained as he pointed to the aisle that was across and a few rows over from the booster seat aisle.

The Alpha took in a sharp breathe, "You scared me."

The four year old bit at his lip, "I no mean too."

Derek didn't answer he just held the boy tight and walked over to where he left the cart. He had agreed to let Stiles walk but now he didn't like the idea of it. He placed the little boy in the seat as he tried to shake the fear that shook him moments ago. He had no idea where it came from, but it hit him hard and fast. The lycan shuddered as the thought of losing the boy crossed his mind. His body shook when another scenario invaded his brain. What if someone had taken him?

The Alpha's mind buzzed at that thought. The Sheriff would've been pissed, the pack would flip out and deep down Derek wouldn't be able to live with himself. The lycan was snapped out of his thoughts when he felt a hand on his arm. "Derek," Stiles said softly.

Derek looked down at him, shoulders still tense as he tried to will his body to relax. "Derek," Stiles said again, "easy."

Derek raised an eyebrow, "What?"

"Easy, easy," Stiles said.

"Okay," Derek muttered.

Stiles looked at him, eye brow raised, "Easy, easy Derek," he said as he gripped Derek's wrist tightly.

Just like that, all of Derek's tension and fear washed away, "Alright," he said, "Alright Stiles."

Stiles grinned at him as he rested his hands in his lap. Derek looked down at him in shock, shocked that the four year old had managed to calm him down. Derek was also shocked that Stiles managed to pick up on the fact that Derek was having a breakdown. The lycan shook his head as he gripped the handle bar to the cart and began to head towards the toy aisle.

It was closing in to four in the afternoon when Derek pulled into the Stilinski driveway. He looked into the rear view mirror. Stiles was asleep, little hands clutching the stuffed dog that he had to have. Derek made quick work of putting his things and Stiles' things in the house before he went back to get the little boy. Derek was unbuckling Stiles from the back when he heard several cars pull him. He pulled back from his position, "Hey guys," Derek greeted as he ducked his head back into the car

"Hey," the pack greeted in unison.

The Alpha nodded to them again in greeting as he gripped Stiles tight. The little boy was still sleeping. Scott laughed, "Man, what did you do?" he asked.

"We went to the store then we went out to lunch, and then to my house to pick up my things."

"Did you make him pack your bags?"

"He wanted to help," Derek said as they began walking to the house.

"So," Danny said trailing off, "Did you figure out the lesson?"

Derek shrugged, "No, I don't think so."

"You aren't telling us something," Lydia said.

"I almost lost him today."

"What!" Jackson yelled

Stiles stirred from his spot in Derek's arms, "We got separated at the store is all," Derek answered as he sent a glare towards the blonde who smiled in apology

"Did you get mad at him?" Allison asked.

"No, I was scared," Derek answered, "Like, I, he, well.."

The lycan trailed off as the moments at the store replayed in his mind. Every emotion he felt hit him hard again. The Alpha's body tensed and shook lightly as the memories flooded his head. "Derek," Scott said as he approached the Alpha, "are you okay?"

Stiles' eyes slowly opened. He reached up hand running through Derek's hair, "Easy Derek," he mumbled.

The pack stared in shock as Derek nodded and calmed down. The Alpha hugged Stiles tightly as he whispered, "Okay, okay."

"Well, I never thought I'd see the day Stiles would be the one to calm you down, that easy and fast," Scott breathed.

Stiles let out a loud sigh as he buried his face into Derek's neck, "Jackson is loud. He-he woke me up."

Everyone laughed as they all found places in the living room. Jackson scowled but it passed when Stiles lifted his head up and grinned up at him. Derek placed him down on floor and watched as Stiles began to tear open into the toys that they had bought. "I need you guys to do me a favor."

"What do you need?" Lydia answered for everyone.

"Try to look up and see if you can find any information on this."

"I'll try Derek, but Stiles is usually our research expert, I can't even read some of those books that you have because it's written in like a weird language," Jackson said.

Derek let out a sigh, "I know."

Danny raised a hand, "I'll try and find some things out. I'll see if I can put my computer skills to work."

"One more thing and Scott this is directed towards you."

Scott nodded. "Go on."

"I'm going to assume we can't give him the Adderall for his ADHD?"

Scott nodded, "Yeah, because his parents didn't find out till he was older."

The Alpha let out a groan, "He was calm for the most part, but then he'd get this burst of energy and he would be just wound up."

"If he gets out of hand you should call us so we can help," Lydia suggested, "you never know what might happen if you go the wrong way."

Derek glared at her but Lydia continued on, "I know. It's awful what I said, but Derek, we don't even know what this lesson is, and you don't either."

Allison nodded, "Plus, I'm sure we can help, the note didn't say we couldn't."

"Yeah," Derek said as he eyed Stiles again, "I'm going to need it and I need to figure this out fast."

Thoughts? Yes? No? Maybe? Review? Please.