An ancient evil awakens in the wake of the return of Princess Luna, and only Rider and Twilight can stop it. As the evil works with a common enemy of Rider and the Mane Six, the group discovers an unsettling truth about there friend, his curse took effect as the others were meeting up with Twilight at the library to regroup and recover. trying to hide his condition he tries to hide him self in the basement of the library only to be found by Fluttershy, can Rider ever be a normal Skybound ever again, or will he stay this way for the rest of his life?