The story continues from the ending of TV Season 3, following Twilight Sparkle's evolution into an Alicorn and her coronation as a new princess. At this time, the precious crown of the Crystal Empire is stolen. To retrieve the crown, Princess Twilight Sparkle takes on the heavy responsibility of traveling alone to another parallel world. There, Twilight discovers that Spike has turned into a dog in this parallel world, while she herself has transformed into a human with both hands and the ability to stand on two legs! Her identity shifts to that of a teenage high school student, where she reunites with her pony friends, now in their human forms...