The sun peeked through the window of the giant cloud home, where a certain rainbow-maned pegasus awoke with a yawn. "Ugh. I hate mornings." Rainbow Dash said as she stretched. She looked over at her tortoise, Tank, as he slept peacefully. "Sometimes I wish I could be you." She chuckled to herself.

Rainbow walked down the stairs and gotten some breakfast. As she rested her head on her hoof while eating, she was thinking about the event that occurred just last night.

-Flashback-
"Pinkie, what do you mean I have a sister? I know you are random and all, but this is just weird. I'm an only child, no brother, no sister. You got that?" Rainbow said as she sat in her chair. Pinkie had just come in the castle announcing that she had met a mare who claims to be Rainbow's twin sister.

"Dashie, I wouldn't lie about this, I Pinkie Promise! Her name is Paint Splash, she just moved here, and she looks just like you, too! Only, her mane is red, yellow, and blue, and her coat is light teal, and her cutie mark is a teal splash." Pinkie said.

"Okay, Pinkie, you say what you want. I'll believe it when I see it. Well, I better go, it's starting to get late and I'm pretty sure Tank is missing me by now." Dash said as she flew off.

-Flashback ends-

Rainbow then put her bowl in the sink and went on her morning flight.

"If I have a sister, why wouldn't mom and dad tell me? I mean, Scoot is sorta my sister, but not my TWIN sister." She thought to herself. She then landed in front of the castle, where all her friends were.

"Hey, girls! What's up?" Rainbow said as she sat in her own chair. "Nothing much." The rest of her friends said. Rarity spoke up after a brief moment of silence. "Rainbow, darling, are you okay?" Rainbow had a curious, yet nervous look on her face. "Of course, Rare, why?" She said, acting casual.

"Because you look like someone tied your wings and slapped you on top of an apple tree." Applejack said. Rainbow shrugged. "It's nothing, really. I was just thinking about last night and all."

"Because after I told you about your sister you're questioning why your parents never told you leaving you with a headache and curiosity that keeps building every second?" Pinkie said in one breath. "I guess," Dash said, knowing not to ask how she knows all of that. Just another hunch. Rainbow shrugged while shaking her head. "I really don't know if this Paint Splash is who she says she is. Why would she come to you, but not me? She obviously knows what I look like. And why wouldn't my parents tell me?"

"Maybe something tragic happened when you two were very little. I'm positive that they mean well." Fluttershy said. Twilight spoke up as an idea hit her head. "Pinkie, so you know where Paint Splash would be?" Pinkie thought for a moment. "She said she lived near city hall, I'll find her if you want!"

"Okay, you find her, and try to bring her back here." Rainbow's eyes widened. "Twilight! What are you doing? When did I say I wanted to meet her?"

"You have these questions that I'm positive she knows! You need to meet her and get the answers you need, whether you like it or not."

Rainbow nodded in agreement. Twilight was right, her friends don't know why Paint Splash was kept in secret, but she would know. She would definitely know if she's going around saying she is Dash's sister.

Author's Note

Thanks for reading Chapter 1 of the prequel in my new series! Tell me what you think!