Princess Celestia is coming to Ponyville to be the guest of honor at the Summer Sun celebration, and in recognition the Mayor has ordered an enormous apple cake. However, Mr and Mrs Cake leave Pinkie Pie in charge and things don’t go quite to plan...
Nightmare Night draws near, and as it does, strange things begin to happen around Ponyville. Scary strangers threaten the town, and things will change for the Cutie Mark Crusaders forever.
Bon Bon, anxious after the Bug Bear came to Ponyville, she speaks with Celestia. What she finds out shocks her. Her clone made in case she needed replacing is still alive. Not only that but she lives in Ponyville!