Rarity has long dreamed of joining the Wonderbolts. It seems like her dream is coming true after she got an acceptance letter giving her a position as a trainee for the team. But she'll find it won't be easy, between having to prove herself through training, having to deal with disapproving pegasi and those who see her as a joke, and of course the upcoming contest between the trainees of the Wonderbolts against their bitter rivals, The shadowbolts.