The Barrier: a naturally-occurring wave of magic that formed soon after the portal to Equestria appeared somewhere in the South Pacific, enveloping Earth with an inevitable tide that has destroyed all life on the planet, all despite the best efforts of man and pony alike. Now, the ponies are left to pick up the pieces and try to preserve what's left, while averting the vacant gazes of the mindless Newfoals left from one of their failed attempts to save what they could.

But there's one thing that all seem to have forgotten, from the ponies of Equestria to the strange multitudes of species in the universe with their sights set on Earth: and it's that you can't keep a good apex predator down. You can only hold them up a little while...

Special thanks to The Footsoldier for the OC, Elisa!