Kit CogGrinder finds himself drafted onto a privateer ship called the E.S. Nimbus Rider, off the northern border of Equestria. His work mainly being the ship's engineer and pilot. He has to wade through the battles against the Altremane Air Fleet, The Celestial Royal Guard and the pirates that litter the airspace of Equestria.

(P.S. This is another of those Steampunk-esque stories with flying ships)