Lucy Heartfillia was a world-famous jewel thief. That is, until she got caught, was thrown in a helicopter, and was whisked off to the Fairy Academy for Troublemakers and Lawbreakers, where she met a lot of friends (including a certain pink-haired arsonist), executed a ton of crazy plans, and tried to avoid getting caught by a certain person she hates. NaLu, Gruvia, GaLe, etc.