When Pinkie Pie gives Scootaloo Rainbow Dash's Cutie Mark, it inspires the CMC to kill ponies and take their cutiemarks for themselves! Unfortunately, what at first seemed a fun dive into Pinkie's secret world of cupcakes and death, turned out to cause more trauma for the girls then anypony has experienced in centuries.

HAPPY NIGHTMARE NIGHT!! Set in the universe of Cupcakes!