A fog of unknown origins begins to appear all over of Equestria, unnoticed by Equestria's inhabitants. Over time, the fog thickens and nightmares start to occur more often, creating unease among Equestrian citizens. Princess Luna expresses her concern to her sister and they start to investigate this anomaly. Unfortunately for them, they're too late. Nightmares come to life and chaos spreads over Equestria. If the princesses and squad of five royal guards can't stop the fog on time, the world might be next...

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UPDATE: So I lost all motivation for this story and no longer want to write this. If you'd like to continue this, then be my guest. Otherwise, sorry to anyone out there who may have wanted this to be finished.
Anyways this is a crossover between MLP:FiM and Fear Equation.
This story is being written before Fear Equation has been released so this story is subject to change when it does come out.
This story takes place after the first two episodes of season 4.