In the land of Equestria everypony is letting there filly and colt compete in the Filming Camera Competition.The Cutie Mark Crusaders give it a shot to get there cutie mark.But the mystery all happens when Derpy the mailmare accidently drops a letter which ends up to the Carousel Boutique and Sweetie Belle ends up finding it too.But the letter has a secret code that anyone can't explain.But will the Crusaders find out what the code is?Find out in The Big Mystery!