A sequel to the story, 'When worlds Collapse'.
The humans that live peacefully with the ponies of Equestria begins to act suspiciously as they start building forces and even a creation of the Grand Master's gets free and turns ponies and humans feral by a single bite.
An ancient race also rises once more to take back what is rightfully theirs, the humans in all of this are planning their ways to take Equestria once and for all.