It is said that some mistakes can have great consequences, and that sometimes things happen for a reason, even if we ignore it... that's a hard lesson the pony known as Pinkie Pie had to learn the hard way.

After accidentally being sealed inside the Mirror Lake, the young mare finds herself ripped away of her memories, wondering who is she and what lead her to the Limbo known as the Mirror World, a reality where the lost memories find a final rest, where the worst nightmares become real... and where the darkest feelings are revealed as disturbing creatures.

Will Pinkie Pie find her way? Will she recover her memories? And most importantly, will she find out that she's the real one, or just another clone without real memories?