There exists an hour each day that goes inexperienced by everypony. An hour where both the Sun, and Moon are silent; Where dangerous living shadows thrive. Thankfully most ponies sleep through this "Midnight Hour", protected by a coffin, and blissfully unaware that such a time even exists. However when Twilight Sparkle receives an odd magical book, she finds herself experiencing this lost hour in time night after night. With no one to go to for fear of sounding crazy Twilight must unravel the secrets of the Midnight Hour, without putting her friends in harms way. But when seemingly healthy ponies start to fall prey to a mysterious illness which renders them completely unable to function like a normal pony with an invariable link to this strange new world. It's Twilight, and her friend who takes it upon themselves to save them.