The crew of the airship EverDream search for a way to defeat the unstoppable darkness.

After Nightmare Moon’s imprisonment Equestria was not the peaceful place it is now. Celestia struggles to rebuild the Harmony that was lost.

The Secret Intelligence Task-force for Extraordinary Reconnaissance or S.I.S.T.E.R is the most secret and well trained force the princess has, and its teams specialise in doing the impossible. Quickly, efficiently and, above all, secretly.

Nightmare moon is going to escape and everypony must be ready whether they know it or not