Lightning Flash and Sonic Boom were both six years old, and they'd been going to school for a year. However, they didn't go to school in Ponyville, oh, no. They went to school up in Cloudsdale (Yes, Rainbow was aware that that's quite the hike, however, she's fast) to learn about flying. Both of Rainbow's fillies found this incredibly interesting and useful, they learned physics and how to make yourself perfectly aerodynamic. They learned math and how to describe flying maneuvers in terms of conic sections. They learned the history of how Equestria was founded and how Cloudsdale was created and about the great Commander Hurricane. They learned language skills, how to communicate with other races for trade agreements and other 'awesome stuff' as their teacher, Miss Winter Breeze, would put it.

While they were there, they each made several friends. Lightning Flash met an egghead colt who, regardless, still was a pretty impressive flier. His name was Cloudy Sky; he had a lavender coat and a dark blue mane with black streaks in it He had bangs, very short, scraggly ones, though. Sonic Boom was incredibly popular, though she had only two real friends. One was a filly named Surprise Party, she had a white coat and a neon yellow mane, her mane resembled Pinkie's and her temperament was the same way. The other was a colt with a yellow coat and a red mane, his name was Evening Sun. Nopony in their class had cutie marks.

"Mama!" exclaimed Sonic when she got home one day, "I have somepony to meet you! We arranged a playdate!" "Awesome, squirt!" said Rainbow, "Let's see!" Evening Sun walked in. "Hey, Sonic's mom! How's it going?" said Evening. "Good, thanks," said Rainbow, "You two go and play, I'll have your dad make some dinner, Sonic!" "Hey, Evening! Come on up, my room's up here!" exclaimed Sonic. "Coming!" shouted Evening up the stairs. "Hey, Thunder!" exclaimed Rainbow, "Make us some dinner, all right?" "Doing," said Thunderbolt.

So a playdate turned into a playdate including dinner, and that turned into a sleepover. Evening Sun's mother dropped by and dropped off his stuff for the next day's school, after a discussion over how they were going to make it to school on time with Thunderbolt, then Rainbow Dash showed up and said, "I've got it, trust me." Then Evening's mother simply said, "Okay, then," and left. "Yeah, mom!" exclaimed Sonic when Evening's mom shut the door behind her, "Awesome!" "Your mom is awesome, all right," complimented Evening, "Come on, Sonic! Let's go!" They actually ended up staying up all night, talking. Since Rainbow and Thunderbolt's room was only one room over and clouds aren't all that thick, Rainbow made a few comments that they were doing the same thing that she and him had done when they were younger. "Not quite that young," commented Thunderbolt. "Yeah," said Rainbow, "But you didn't meet me until I was already a young mare." "Good point," Thunderbolt said.

It turned out that Lightning Flash had decided to sleep over at Cloudy Sky's house. She intended to fly back to her own house, collect her stuff, and then go to school. And Lightning could afford to do that, because she was just that fast. "Our kids are growing up so fast," Rainbow said to Thunderbolt after they waved at Sonic Boom and Evening Sun as they flew to school. Or, rather, Sonic was pretty much dragging Evening. He didn't exactly mind, he was laughing the whole way there.

They arrived at school and Sonic met with Surprise. "Hi, Sonic!" Surprise exclaimed happily, fluttering a little off the ground, "How's ya?" "Good, good," Sonic said, that was how they'd greet each other. It was kind of like a tailshake. "Hey, Sonic!" exclaimed Lightning, her friend Cloudy Sky landing with her. "Lightning!" Sonic exclaimed, holding out a hoof for their favorite tailshake. "Fine…" said Lightning, landing. "Hoof-bump, wing-bump," they said together, then they did a loop and a twist as they said, "Twist and jump!" Then they dropped back onto the clouds below them. "Awesome tailshake!" exclaimed Cloudy. "Yeah, awesome!" exclaimed Evening. "Don't forget cool and radical!" said Surprise in her usual happy, bouncy way.

Then their teacher, Miss Winter Breeze, walked out of the building and said, "Come on, my little ponies! Time for class!" "Yay!" they all exclaimed at the same time, running up to the door. "Come on in, let's get started on your history lesson!" Winter would say. "Ooh! Are we gonna learn about Commander Hurricane and how she wrote all about her adventures and that's how we know what she did?" asked Sonic excitedly. "No, we're going to learn about the Tree of Harmony and how Equestria as we know it today was created!" said Winter Breeze. "Aw…" said Lightning. "Don't worry," Miss Winter Breeze said, "This is just as cool! Find your seats, please, then we'll start our lesson!"

After history, which, as Miss Winter Breeze had promised, was quite cool, they had their flying lesson. Of course Sonic Boom and Lightning Flash were ahead of the rest of their class. "Your mom is AWESOME, so it fits that you are too!" said Evening Sun. "Thanks," said Sonic and Lightning in unison, "We're awesome!" "Do you two jinx each other often?" asked Cloudy Sky. "Yeah," they said in unison (again!). "Now we'll have a competition. Let's see who can fly the fastest!" exclaimed Winter Breeze, "And I'll be in it with you!" "Really?" asked Surprise, cracking up, "You're… gonna race… us?!" She broke into a giggle fit again. "I have a firm rep. I ain't gonna let that go to waste 'cause my teacher beat me!" exclaimed Sonic. "Then you'd better fly fast!" exclaimed Winter Breeze, "On the starting line, everypony!"

All of the class, which consisted of Lightning, Sonic, their friends and a few other foals. "Ready," said Winter Breeze, "Set…" "GO!" everypony exclaimed at once, then Lightning and Sonic immediately zipped ahead. They saw an obstacle course ahead of them, it involved going through hoops and dodging thunderclouds. "You're on!" exclaimed Sonic. "Yeah!" exclaimed Lightning, they flew together through all the hoops and dodged all the thunderclouds together. And they tied for first. "Nice!" they exclaimed, doing their favorite tailshake, "Hoof-bump, wing-bump, twist and jump!" Evening Sky and Surprise Party as well as Cloudy Sky arrived soon afterwards, followed by the rest of the class, followed by Winter Breeze. "See?" asked Sonic, "I told you I wasn't about to get beaten!" "And you were right!" said Miss Winter, "You're very good fliers for your age! Then again, given who your mom is, I wouldn't expect any less…" "Yep!" the twins said in unison. "Okay," said Miss Winter, "Now, we'll move on to math class, today we'll learn geometry…"