It's been two years since the war began in the north. Two years of being pushed back, kilometer by kilometer, across Equestrian soil. The nation runs short of ponies fit to lead her masses, and casts her net ever wider in search of bodies for the furnaces of war.

Summer Meadows, the youngest daughter of a venerable unicorn house, is pulled from her officer training early and sent to the front to be a tank commander. She is, of course, excited at the prospect of serving her country and her princess at last, but there is one small problem: she doesn't know the first thing about being a tanker...

A tank crew ensemble story set in a world in which Equestria finds itself in a losing war with a power-hungry neighbor, using hardware loosely based on the Second World War. It combines two things I love: ponies and tanks, in a never-before-seen kind of pony war story.