The events of this story take place after the episode Luna Eclipsed

Luna loved her first Nightmare Night. She had so much fun and was dissapointed that it came to an end. However she had a plan to see if she can stir things up by summoning the power of nightmares to trasform herself into a vampire and have more fun. But the Nightmare spread to Ponyville and now the town is trapped in a dimension where its always Nightmares Night. It'll be up to the mane 6 to find a way to save their town and to find Luna before its too late.