After the crystalling, the banquets, and the private after-party, Starlight gets her chance to be alone with Sunburst. They realize that they share two things in common: their friendship and different perspectives of the day he got his cutie mark.
Starlight Glimmer's past and future collide in Canterlot years before the 1000th Summer Sun Celebration. Starlight Glimmer, a teenage runaway, tries to reform herself but her past crimes and Sunset Shimmer make that difficult.
Her best and only magic teacher, Sunburst, abandoned her. Proper Step refused to teach her magic; it wasn't "lady-like." She runs away and learns to fight with hoof and magic, to save her lifeābut doesn't realize she's becoming somepony's sharp tool.