Twilight didn't know that the spell was just a prank… It WAS in the book, and looked like any normal spell. What's really odd is that when she tried to test it on a rock, it sorta…well, er, backfired? I guess spells bounce off of rocks. The oddest part: The spell itself! How would you feel if you and your friends all became cats in an unfamiliar world?! It's especially rough when two of your friends get lost, and separated from you. Will they be able to survive this world of warrior cats?