Trapped in Equestria together, a brony and an anti-brony come to terms with their new life. At the same time, a new power threatens to unmake all of Equestria.

A MLP/Warhammer 40k crossover, based on the novels by Dan Abnett. A Tyranid hive fleet descends upon Equestria, and the Tanith are sent to investigate alongside the Ordo Xenos.