DISCLAIMER: I do not own Alvin and the Chipmunks. Takes place in the Alvin Show canon, with 80's/90's appearances for the sake of character accuracy. Begins in 2003.

A thrilling weekend lay ahead for the world famous chipmunk triplets Alvin, Simon, and Theodore. Their adopted father, Dave, was taking them to yet another of Alvin's favorite sporting events: a NASCAR race. Continuing on Alvin's quest to attend a race at every track on the circuit, they were stopping at the popular, 1.5 mile cookie cutter known as Texas Motor Speedway. This was one of the fastest tracks under 2 miles long, and Alvin was very excited.

Despite popular belief, Simon enjoyed these outings as well. He liked to look at each car's performance from a technical standpoint, and speculate which poor performer would improve the most by the end. He found the science behind racing to be truly entertaining.

The two eldest brothers weren't alone in enjoying these trips, as Theodore found them to be one way to sample food from all over america. Each track had a unique set of concession stands, and the plump little chipmunk enjoyed taste testing food from each and every one.

Now, the family of four was headed towards the grandstand to join the light crowd attending the truck race. This was NASCAR's lowest-tier national series, and thus it drew the smallest crowd. As they neared the row of souvenir haulers parked in front of the grandstand, something caught one of the boys' eye. Upon a second glance, Simon confirmed his sighting: there was a small boy atop one of the hills leading up to the track, staring through a fence at the asphalt oval.

At first he thought the boy was bald, with a strange series of bumps atop his head. A closer look revealed an astonishing discovery that rocked Simon's very core. The boy wasn't human at all; he was a chipmunk! Simon was flabbergasted, because he and his brothers were the only talking chipmunks he knew of. The child genius had always attributed this to a strange genetic mutation, but this revelation had him reconsidering his theory.

"Dave, stop!" Simon cried, noticing his family moving on. Dave turned to his tallest son.

"What is it, Simon?" he asked. The blue-clad chipmunk pointed up at the boy.

"I found another chipmunk, Dave!" Simon explained. Dave examined the small form staring through chain link. The boy appeared roughly the triplets' age, but his attire was worrisome. Along with an orange hoodie and a black shirt protruding from the bottom, the boy wore only sneakers and what appeared to be a plain, white diaper. What's more, there were half a dozen track employees around and none of them seemed to notice the boy.

"Strange…" Dave mumbled to himself. Simon raised an eyebrow.

"What was that, Dave?" he asked. The boy's father snapped out of his daze.

"Nothing, Simon," Dave assured him.

"Wait, is he wearing-?" Alvin started to ask, noticing the boy as well.

"Simon, why don't you go talk to him? See who he's here with; maybe we can become friends," Dave suggested, cutting off his most arrogant son.

"Sure, Dave," Simon replied, heading up the hill. As his bespectacled son neared the boy, Dave noticed that a few track workers now had their eyes on the two. As worried as he was, it was too late now to do anything other than keep a keen eye on the chatting eight year-olds. Meanwhile, atop the grassy hill, Simon faced his own problem.

"Hello, my name is Simon. What's yours?" he asked. The boy remained silent. "I'm not going to hurt you; I just want to be friends," Simon continued patiently.

"Austin…" the boy finally answered. The bespectacled chipmunk took note of Austin's quiet, shy demeanor.

"Are you here with your parents?" Simon asked. Austin shook his head. "Grandparents?" The same response. "Well... who are you here with?"

"Mr. Johnson," Austin answered, pointing at one of the track workers. This got the man's attention, and his movement got Dave's. Soon, there were six people atop the hill, creating an unusual scene.

"What's going on up here? Who are you people?" Mr. Johnson asked.

"My name is Dave Seville, and these are my boys: Alvin, Simon, and Theodore. Simon was just trying to befriend another chipmunk; we don't see very many," Dave explained. Mr. Johnson took note of the three boys surrounding Austin.

"Oh," Mr. Johnson replied, recognizing the triplets, "Say, are you guys adopting?" Dave was taken aback.

"W-What?" he sputtered, "Why do you ask?"

"Allow me to explain." Mr. Johnson paused for a moment in reflection. "Austin was left here after a race six years ago, a mere two year-old at the time. I couldn't get anyone to take him in, because he's a chipmunk; even my own wife! I've done the best I can to raise him here at the track, but he can't grow up like this," the man explained, "I can't even toilet train him 'cause of the lack of bathrooms." Dave gasped in shock as the small, orange-clad chipmunk turned shyly away.

"That's terrible..." he responded, "Of course we'll take him in!" The triplets reacted with a mixture of shock and excitement; they were getting a new brother!

"I sure am glad to hear that; Austin deserves better than this," Mr. Johnson replied, "Follow me; I'll take you to get his stuff."

The NASCAR race weekend seemed to fly by, and soon the Seville family had endured the long flight back to California. Dave made a quick stop on the drive home from the airport, officially making Austin part of the family. Now, he and the four young chipmunks arrived back at their small but luxurious house in Anaheim. After a group effort at dealing with everyone's luggage, Dave set his focus on getting the newest Seville settled in.

The triplets joined their father in giving Austin a tour of the house, starting in the entryway and delving into every nook and cranny of the humble abode. This included a thorough circuit of the kitchen, so Austin wouldn't have trouble finding anything. Unfortunately, an issue arose near the end of the tour; all bedrooms in the house were already spoken for. Thankfully, Simon volunteered to share his with Austin, putting a proud smile on his father's face.

Once the tour was over, Dave and Theodore set about preparing dinner. Alvin retreated to his bedroom, becoming absorbed in his PS2. While all this went on, Simon brought Austin back to their room and turned on the TV. The cable was already tuned to USA network, which was airing Monday Night RAW at the time. Austin was instantly drawn in, especially by the dark, eerie superstar known as the Undertaker.

"Dinner's ready!" Dave called. Having already pried Alvin away from the TV, he mainly spoke to Austin and Simon. The two boys did not respond, but Dave remained calm nonetheless. Their bedroom door- like Alvin's- was probably closed and blocking out sound. Walking down the hall, Dave confirmed his suspicions and started to enter the boys' room. He stopped in surprise, however, as his eyes fell on the scene before him.

Dave could tell by their damp fur that both boys had already taken their nightly shower. Simon was now clad in cotton pajama pants, an undershirt and a hoodie; all fitting a blue color scheme as usual. Austin wore a button-up pajama top made of soft, amber-colored cotton; the garment accompanied only by a plain, blue and white diaper. The two were watching TV from the comfort of their bed; Austin snuggled up to his older brother in the most adorable fashion.

"I hate to break this up, but it's time for dinner," Dave hesitantly announced. Simon quickly paused the wrestling show with the use of the family's DVR.

"It's alright, Dave; we were getting hungry anyway," he assured his father. The two boys hopped down and headed for the door. Strangely, Austin stuck close to his brother's side; Simon wrapping an arm comfortingly around him. Dave reasoned that the boy was likely still nervous and found comfort with his bespectacled brother. All this aside, the three Sevilles made their way to the kitchen to join Alvin and Theodore for dinner.

The family of five shared a scrumptious meal, during which Austin warmed up to Theodore and his amazing cooking. Alvin was arrogant as usual, however, which kept his reputation poor at best. After dinner, the boys split up and headed to their rooms for the night. Dave waited until ten to make his usual rounds, and naturally he started with his most unruly son. Forcing Alvin to turn off his game system and go to bed, the father of four moved onward down the hall.

Next was Theodore's room, which was stocked with snacks and a mini fridge. As expected, Dave found his green-clad son eating something and playing with one of his toys. Theodore was forced to put away his toys, finish his snack, and brush his teeth before going to bed. With his other two sons dealt with, Dave now came to the final door in the hallway: Austin and Simon's. It was 10:20 by this time, and the father of four worried about his youngest son.

The door opened with a soft creak, revealing a room where darkness was pierced by a small night light. Both boys lay silently in bed; the rhythm of their breathing indicating sleep. Austin was snuggled up to his older brother, his arms wrapped around the boy's midsection. Simon had an arm wrapped protectively around his younger sibling, whose head rested just under the taller boy's chin. Dave smiled and backed out of the room; something told him those two would be close for a long time.