When a mysterious disease sweeps through Equestria, bringing back the dead, most of Equestria is wiped out with the exception of small villages. Trixie finds herself in Dodge Junction forced to scavenge and kill off the former townsponies until she finds two survivors who lead her to a camp of other survivors, including Twilight Sparkle. The three find a underground facility where the disease originated.

https://www.equestriadaily.com/2016/12/drawfriend-stuff-2112.html?m=1

Cover art^