Rainbow Dash was your normal filly with billionaires for parents. She loved them and they loved her. Everyone was happy until the one fateful night coming home from the movies. That night, Rainbow saw her parents be murdered in front of her own eyes. When their killer is released from prison on good behavior, she takes upon the persona of a superhero named Batmare. She vows to her parents vengeance upon their murderer and all of the criminal scum in Ponyville.

It looks like tons of people have already come up with this idea, but none have done it with Rainbow Dash, right?

In the future, you will read this story. You will read how strange it is. You will read about Big Macintosh and his future date with Fluttershy, the shyest pony in Ponyville. You will read about how it is going to go down. You will read about how Fluttershy and Big Macintosh are totally awkward together. You will read it. You will wonder how the narrator knows that you will read it. You will figure it out that the author is writing this in the craziest writing style you will ever think of: second person omniscient future tense.

After a long day of failed attempts at trying to get cutie marks, the Cutie Mark Crusaders see an infomercial that promises to make all of their dreams come true.

Very short story, written in a spur of the moment type deal. Hopefully by the end (or the beginning) you'll get what it's based off.