Diamond Tiara has always enjoyed picking on the Cutie Mark Crusaders. But one day, she finds she's gone too far, and everything for her comes tumbling down. But help may come from the most unexpected of places...
Drafted into the defense of Equestria, the Crusaders volunteer to embark a series of dangerous operations behind enemy lines to cripple one of their chief technological advantages, a revolutionary spell matrix that Twilight refers to as the "radio."
The Crusaders learn that they aren't like other ponies. As they uncover the secrets of their origins, the trio grow closer than ever, discovering not only their unique nature, but the incredible power that comes with it as well.
Apple Bloom takes a shortcut on a joint project for Twilight time. This poor decision inadvertently leads to a discovery about herself that will change her life forever.