The world of Equestria has become a wasteland the only dead trees for life , sulfur clouds blocking the sun , the sky is blood red with acid-spitting pterodactyls swooping around like vultures, The oceans have turned blood crimson, and demons are scouring now the land for ponies to enslave. A reincarnation of the demon king, Black Tail, liberated the demons from their captivity.
However there is a hidden underground base known as The Resistance