She saved the galaxy multiple times, and after sacrificing herself to save John, Cortana now finds herself stranded on an unknown world as a living breathing pony. Many paths lay ahead for her, and now she must fight in a new war, yet familiar war.

When a strange changeling arrives in a strange blue box in Octavia and Vinyl Scratch's back yard, they soon find themselves apart of something big. Join them as they uncover what really happened two years ago during the attack on canterlot.

After the TARDIS crash lands on Equestria, Vinyl Scratch and Octavia find that there is much more to their world than they thought. Ponnequins are now trying to take over the world and now the two musical mares must trust a strange looking changeling