Pinkie Pie, secretly traumatized by her parents sending her away (by suggesting it over and over while she is sleeping) becomes deeply paranoid her friends will leave her.(Either by choice or through something happening to them.) She decides to invite them to a special party, where she will get them to stay with her, safe, forever.

Twilight Sparkle, Rainbow Dash,Applejack,Fluttershy,Rarity, and Spike must try to figure out what's wrong. But will it be too late to help anypony? And who really is in the most danger, them or Pinkie Pie.