it all begins when Rarity was shopping with Sweetie Belle. Rarity was criticizing the colors and style. Suddenly, Rainbow Dash comes and explains that Twilight found some stange door behind a bookshelf she was moving. They gather the others including Scootalo and Applebloom. Derpy follows right behind them curious of why everypony was heading to Twlilight's. When they all enter the door, they emerge int a strange world. The group reailises that they have become cats! as they are soon attacked by thunderclan Rainbow dash and Twilight think fast and deafeat most of them. after they get acceped into thunder clan (after getting lots of comments on thier pelt colors being the same as they were when they were ponies. and having wings, horns, weird marks on thier flanks and for AJ, a hat) they go on lots of adventures!