Firework played outside with her sister (who is two years younger than her), Starburst, and their brother (who is one year younger than Starburst), Firebeam.
"Stop using your fancy magic and come fly with me! I'm not an Alicorn like you two!" Firebeam yelled at his sisters.
"But magic is fun!" Firework insisted.
"Yeah! And, like Mom was, I'm a terrible flyer!" Starburst argued.
"I'll teach you!" the young prince said.
"Are you saying we're horrible flyers?"
"Maybe I am! At least I listened through Mrs. Rainbow's lessons!" Firebeam hollered.
The siblings kept arguing until their parents, Twilight Sparkle and Flash Sentry, walked outside.
"If you three keep arguing, we're going to have to tell you another story," Twilight said.
The siblings covered their ears. "LA, LA, LA, LA, LA!" they screamed.
Flash chuckled. "Don't worry. This is going to be one you haven't heard about. Our wedding!" He and his wife began the story they were sure their children would like.
Twilight and Flash arrived in the Crystal Empire with Rainbow Dash, Rarity, Applejack, Fluttershy, Pinkie Pie, and Flash's brothers, Flicker, Wispy, and Light. Spike was also among them.
The eleven went to the castle, for Twilight's parents, Night Light and Twilight Velvet, and her brother and sister-in-law, Shining Armor and Princess Cadance. Cadance was going to preside the wedding.
"Okay, everypony! There are lots of preparations to be made! But we'll do them tomorrow. It was a long ride." Twilight explained.
Everypony retired to their rooms.
The next morning, Twilight was awaken by a knock on her door.
"Come in!" she called out wearily.
Flash walked in.
Twilight brightened up. "Hey, Flash!"
"Hey. Um, we need to discuss something."
"Of course,"
"Um, Sunset Shimmer came back," he said.
Twilight looked confused. "Okay. She can come to the wedding, but I thought she would stay in the human world."
"Yeah, but... I'm marrying her instead,"
Twilight stood with her mouth agape. "What? But, I thought you loved me..."
"Yeah, well, I realized that I loved Sunset even more. Sorry, Twilight. Don't worry, you can still watch."
Flash left the room, with Twilight in a state of sadness.
That afternoon, her friends knocked on the door.
"Twilight! We have to try on your wedding dress! And you have to approve the dresses for the bridesmaids!" she heard Rarity say.
"And ya have to check out the food!" Applejack called.
Her other friends kept trying to get her out, until they heard a sound. A sob.
"Twilight, we're coming in!" Rainbow Dash said, banging the door down.
That was when the six (Spike was with them) saw Twilight on her bed in the fetal position, crying.
"Twilight! What happened?" Fluttershy inquired.
"Flash and Sunset Shimmer happened! Flash came in my room this morning and said that Sunset Shimmer came back and, and he said he's marrying her!" Twilight cried.
The girls and dragon gasped. Rainbow stomped her hoof. "WHAT?! WE NEED TO TEACH THAT JERK A LESSON!"
"No, Rainbow. Flash will be happy with Sunset. I want him to be happy. And I want to watch the ceremony. So tonight, we will watch Flash get married to Sunset Shimmer." Twilight objected.
Even though they disagreed, her friends thought that if Twilight was happy, they were happy. That evening, they went to watch the wedding.
Apparently, Cadance was fine with Flash marrying Sunset, because she was still presiding.
"Mares and gentlecolts, we're gathered here today to witness the union of Sunset Shimmer and Flash Sentry.
"Before we begin, does anypony object this marriage?"
Rainbow couldn't hold it in and she yelled, "I OBJECT!"
Sunset and Flash glared at her and green light ignited from them. Soon, they revealed themselves to be Changelings!
The audience gasped. "Where's my fiance?!" Twilight demanded.
The female Changeling approached Twilight. "I'm Bugamena, and this is Pepper. He and I are sorry, but Queen Chrysalis forced us. We don't know where Flash Sentry is. But Sunset Shimmer is still in the human world."
Pepper, the male one, nodded.
Right then, Queen Chrysalis appeared. She scowled at Bugamena and Pepper. "YOU WEREN'T SUPPOSED TO TELL THEM THE PLAN!"
She pointed her horn to the floor, and in a burst of green light, Flash appeared.
"Flash!" Twilight cried.
"Since my plan is ruined, I might as well give him back to you. But I will be back, Twilight Sparkle." Chrysalis glared at Twilight, then at the pair of Changelings.
Once she, Pepper, and Bugamena left the scene, Twilight and Flash embraced.
They both carried on with their wedding, with no interruptions.
"Wow. You were right; we did like it." Firebeam gasped.
"We knew you would," his father smiled.
"Now can we continue our competition?" Firework asked.
"What competition?" Twilight questioned.
"The one on whether flying or magic is better," Starburst explained.
"Oh, magic is way better," Twilight grinned.
"No, flying is," Flash said.
The family was in a friendly debate for the rest of the afternoon.