Rainbow Dash, Applejack, Pinkie Pie, Fluttershy and Rarity, all went to the same school at some point in time. Sadly their beloved teacher Cheerilee died there in a way they can't remember. Now -years passed the events- that very same teacher wants revenge. A revenge that can only be achieved by them bleeding to their death while screaming in agony.

Revenge on the five that ruined and eventually costed her, her life. But is everything as it seems to be? Or is this all, one big nightmare in and of itself? Frightened for their lives, the are willing to do everything to keep themselves alive and away from the killer. A killer who takes them in their very dreams.

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A story because I was bored alright, picture is a little unrelated for I couldn't really find a good one for it.
Yes, this can be considered a crossover, or at least Ponyfied version of 'A Nightmare on Elms street' and I agree, but given how I personally dislike it to make a character come from one universe in the other either staying normal or ponyfied, I went with for me the most logical thing.