When Captain Price and the remnants of Task Force 141 get transported through space and time while looking for Makarov, they end up in a strange land called 'Equestria.' While they all just want to go home to finish their own war, will a new war in this mystical place keep them from going?

After discovering and oddity in a history book, Princess Celestia
exposes a hidden piece of Equestrian history for Twilight. After only
scratching the surface, Twilight soon discovers that this story holds more
than she could ever have expected. The Great War.