After Twilight Getting Her New Castle Queen Chrysalis Is Back And Became More Powerfull And Plans To Destroy Twilights Castle But Before Destroying The Castle She Turns Celestia And Luna To Changelings While Princess Cadence Gets A Letter From Royal Guards Of Canterlot And Say That Luna And Celestia Have Been Turned To Evil. Cadence Goes To Twilights Castle And Tell Twilight The Bad News And Twilight Cadance And Her Friends Must Defeat The Queen When Twilight Read Some Books From Castle Of The Two-Sisters She Learns Some New Magic Tricks To Defeat Chrysalis.