Don't you hate it when some egghead tells you what's wrong with your life? Don't you hate it even more when she's right? Twilight Sparkle gathers her friends together and tells them what they don't want to hear. Which is the truth.
Starlight won, or so she thought. Changing time without waiting for Twilight's return, she thought she succeeded. Upon leaving the past, she comes to a place she's never seen before. Fortunately, more than one pony in Equestria has fiddled with time.