Scootaloo overhears Twilight talking about a time travel machine. She breaks into the library and travels back in time to meet her hero, Rainbow Dash, as a filly. It would have been the perfect plan if Dash had been anything like she expected.
Snowflake can fly. Scootaloo can't. She's decided her best solution is for him to train her, get her in the air his way. And he'll do anything to make sure that doesn't happen.