Fluttershy wakes up and finds that she is no longer the pony she once was. With the help of her friends they find out about a mysterious threat against Celestia. Will Fluttershy and her friends stop it in time?

Twilight discovers the horrors of the Equestria Museum by playing a deadly game of hide-and-seek with a mysterious pony. Little dose she know, that the shifty pony has control of life like replicas of her friends! Can she survive the night?