As a pony in the service, there is the name you're born with, the mark you earn, and then the one you earn. Newly-minted Captain Down Range is tasked with taking command of Lazy Company - better known as the dumping ground of the Royal Army.

A discordant plot takes the life of her master and settles her in the lap of two Alicorns, who she must suffer their snark and wit to learn all their is about magic and harmony.