When a experiment gone wrong lands a ruthless and powerful foe in the middle of Equestria, Twilight and her friends must put trust in a battered group of human soldiers if they are to stave off a revolution of the Bolshevik variety...

The Mane 6 in an alternate reality in which they were born and raised in the underlevels of Corscuant. Their entire lives have been struggles to survive in a crime- and poverty-ridden neighborhood that they have all but forgotten their dreams of leaving.