Over a thousand years ago, Princess Luna befriended a strange, 'young' stallion who claimed to know the Doctor, Captain Jack, who offered her assistance in a time when Equestria needed it. Celestia, however, was not so fond of him...

When Trixie Lulamoon heads north to the Crystal Empire to find a new life, and perhaps a little peace with herself, she finds more than she bargained with when she encounters a cluster of strange crystals - and a group of stranger new friends.

After an encounter with a group of odd, unnatural interdimensional aliens, Twilight is given a choice by a strange version of Death: enter the minds of various versions of her in the multiverse to fight the invaders, or watch it crumble to dust.

For the first time in thousands of years since Princess Luna established a colony for her Children of the Night, Princess Luna plans to visit them once again. The catch? It's half-way across the galaxy, and it may not be easy to get home.

After becoming Pinkie Pie's newest baking assistant, Gir and Rainbow bond with each other over a plate of cupcakes...