(Disclaimer: I do not own Alvin and the Chipmunks or Jimmy Neutron).

The chipmunks followed Jimmy and his friends out of the lab and into the house. The chipmunks gazed wide-eyed at the eye-popping scenery. The grass was so green, the trees were so leafy… but then, perhaps it was just a very nice town, Simon thought. It appeared to be a moderately middle-class suburban area.

Theodore rushed up to say "hi" to the skinny woman in the green dress who was tending to something in the oven.

"Hi, I'm Theodore!"

"Aaaugh!" Mrs. Neutron ran to get the broom out of the cabinet and began swatting at the munks. "James Isaac Neutron, what have I told you about doing experiments to create giant rodents!"

"Mom, I did not create them, they came out of an alternate world. They claim to be chipmunks, and they are just like people in their world. Their names are Simon, Alvin, Theodore, Jeanette, Brittany, and Eleanor. And Simon happens to be almost as much of a genius as I am."

"Almost?" Simon commented, folding his arms.

Mrs. Neutron took a deep breath and lowered her hand from her heart. "Well, pleased to meet you, chipmunks." She reluctantly shook hands with each of them.

"Mom can't get over the time I swapped heads with a hamster," Jimmy said.

"Why would you swap heads with a hamster?" Simon asked.

"Accident. It was supposed to be a teleporter."

Simon put his hand to his forehead. "That's not the way you achieve teleportation…"

"Well, if you are like chipmunks in our world, then you're in luck! I just fresh-baked a delicious pecan pie."

"Did somebody say pie?" shouted a goofy man's voice. It was Jimmy's father, a man with a big nose, glasses, and a long face.

"Hugh, Jimmy has some new friends he would like to introduce."

"Dad, these are my friends, the chipmunks, Simon, Alvin, Theodore, Jeanette, Brittany, and Eleanor. They come from an alternate universe."

"Well, nice to meet you, otherworldly chipmunks! Say, can you store food into your cheeks like chipmunks in this universe?"

"Yes we can, and it really comes in handy when there's a lot of food around, but no time or room in the tummy to eat it," said Theodore.

"Well, um, OK, just as long as you don't stuff all of Sugar Booger's pie into your cheek pouches."

Fortunately, Mrs. Neutron had baked two pies, so there was plenty for everyone. As they sat down to eat their pie, she bragged to Simon about her son's accomplishments.

"And when he was only in second grade, he won his first national science fair, with his robot dog Goddard."

"Fascinating," Simon said, his expression strange and hard to read (for it was not one that he showed often). "Um, where is this dog Goddard?"

"Oh, he's up in outer space, collecting cosmic rays for Jimmy. He programmed Goddard with a quantum tachyon energy detector so that he can track and detect ultra-high-energy cosmic rays before they hit. He's trying to find a pattern to explain the occurrence of ultra-high-energy cosmic rays. When my little genius figures it out, he will have it published in a scientific journal! It would be his landmark 50th paper published!"

"Incredible." Simon had never built anything that had gone into space (although he remembered Alvin being rivals with a kid who built a rocket ship that not only went into space, but traveled above the speed of light – but then, he was a rich kid who had the resources. Now, Jimmy's family did not appear to be any richer than Simon's family – probably less so, but then, this was the future…

"So, Mrs. Neutron, you seem like a very intelligent woman. What do you do for a living?"

"Well, I used to work in – never mind. I mostly spend my time baking pies and cookies now, and taking care of Jimmy – and Hugh, for that matter. He has a job fixing cars."

"I see." Simon watched as Hugh made Theodore laugh by playing with his silverware.

"I am Super Fork! By day I defend breakfast! By night I conquer dinner! And always with the help of my sidekick Knife Boy!"

"So, um, Jimmy, have you made any spacecrafts asides from your dog?"

"Why yes, as a matter of fact, I have made quite a few rockets in my time. Would you like to see my favorite?"

"I would love to!" said Jeanette, who was sitting next to Jimmy.

Simon's eyes narrowed. "With pleasure."

Sheen checked the chicken clock. "Hey, Ultralord's almost on! Are any of you guys an Ultralord fan?"

"Who's Ultralord?" asked Alvin.

"What? You never heard of Ultralord? What kind of a horrible universe do you guys live in?"

"Sheen, they live in the 1980s," said Jimmy. "Perhaps Ultralord hasn't been created yet."

"Then I gotta introduce you! Would you like to come to my house and watch Ultralord and play with my action figures?"

"You bet!" Alvin hopped out of his seat and followed Sheen out the door.

"Well, it appears that we're out of pie!" said Mrs. Neutron. "Now, who here wants to help me bake some cookies for dessert?"

"I do!" shouted Eleanor, Theodore, and Carl all at once.

"Well, I'm off to the mall," Cindy said.

"Me too," said Libby.

"Can I come?" asked Brittany.

"Sure!" said Cindy. "I'll help you get ahead of the times on fashion. I don't know if you're aware of this, but leg warmers are so two decades ago."

"Oh gosh…" Brittany stared at her clothing in shame. She had never been "out of style" before.

"And I'll introduce you to the music of the future," said Libby.

"Awesome! Hey, Jeanette, do you want to come?"

"Um, no, thank you. I'm going to check out Jimmy's inventions."

Simon and Jeanette followed Jimmy back out to his lab.

"Cool! What's this?" Jeanette asked about a helmet with tubes and wires on it.

"Oh, that's my Brain Drain helmet. It lowers the IQ of whoever wears it."

"Why would you drain somebody's brain?" asked Simon. "That's just evil!"

"I only used it on myself."

Simon gasped. "Even more evil! Thank goodness you had the sense to undo it!"

"Um, no, actually, I accidentally set the dial to "drool monkey" and I was too stupid to even know how stupid I was."

"Well, I designed a Thinking Cap that increases the IQ of whoever wears it."

"Then why didn't you make your brothers as smart as you?"

"Well, I did, but I lost it… and the effects are only temporary."

"Temporary! Ha! I modified my Brain Drain helmet to dually function as a Brain Gain helmet, and its effects are permanent!"

Simon examined the apparatus. "I see. I certainly hope you didn't actually use it on anyone! If you did, the poor victim's brain would expand until the head exploded!"

Jimmy laughed sheepishly. "Hehe. I know…"

Jeanette said, "Ok, Jimmy, show me your rocket now!"

Jimmy pressed a button and a trap door opened out of the lab floor to reveal his rocket.

"Want to go for a ride?"

Jeanette said, "Sure!"

"Jeanette, don't! Just look at the rocket! It violates all of NASA's aircraft and spacecraft safety protocol!" said Simon.

Jimmy said, "what are you talking about? It's perfectly safe! I've ridden it dozens of times!"

Jeanette said, "Yes, Simon. I'm sure Jimmy knows what he's talking about!"

Simon said, "Well, I wouldn't even ride through the air in that thing!"

"Well, if you want to stay earthbound," said Jimmy, "be my guest. 'Cause I… gotta blast!"

Jeanette hopped into the rockets Jimmy revved up his rockets.

"Wait… Don't go… Jeanette! Wait for me!"

Simon jumped and caught the edge of the rocket at the moment that it took off. He was hanging off of it, much as he did during the time that Alvin went on that balloon race, until Jeanette pulled him up.

"You had better pull up the windshield unless you want to suffocate in the space vacuum!" Simon sad. What a lunatic, he thought. It's a wonder he hasn't killed himself already.

"You're just jealous because you cannot build an interstellar rocket with hyperdrive technology."

"For your information, Mister fudge-sundae-for-brains, if you can build a transdimensional teleporter, then you can build a hyperdrive! The reason I haven't is because of the dangers of spaceflight – black holes, hot stars, mutating cosmic rays, and most of all, the utter LACK OF OXYGEN!

"Brace yourself, Jeanette… We're going to die…"

Simon turned around and watched as the earth became smaller and smaller.

The earth was smaller than the moon, and shrinking, and yet, he still wasn't dead.

"I'm still breathing, Simon," said Jeanette.

Simon inhaled freshly.

"Well… That's a relief…"

"See? Like I said, you're just jealous that you do not have the intellectual capacity to design and build one for yourself!"

Simon rolled his eyes. "Well, it must be easy to build spacecraft suited for a universe where there is AIR in OUTER SPACE!"

Stay tuned!