Prolouge
Rainbow Dash thought about having her spped put up a level. She decided to team up with fluttershy and lightning dust. (Yea, thier still friends!) "Ok, 3, 2-" "Wait!" Interuppted fluttershy 'I'm I'm not-" "1 GO!" Lightning dust and Rainbow Dash went as fast as they could, but lightning dust let go. she knew RD was going too fast. "Rainb-" Siad lighntning dust. But it was too late.
Sonic was out for a run, when he saw a rainbow heading strait for quickly speed away. He saw a pony. Not any regular pony, a flying, rainbow pony! "You Ok, Little guy?" It woke up. 'I'm not little or a guy." Said the pony "I'm Rainbow Dash, The fastest thing alive! It's RD or Dash for short." "i dougbt your the fastest thing alive." Said Sonic "Cuz I am."