Despite the significant ideological differences between the Solar Empire and the New Lunar Republic, the two countries retain a relatively peaceful coexistence. It doesn't stop Princess Luna from recruiting soldiers and operatives from her rival's side; under her very nose, no less.

Swiftwind, a pegasus serving in the Solar Guard, hears Luna's call, and feeling his natural talents to be underutilized by the Solar Guard, heeds the call of Princess Luna and defects. While hesitant to leave his friends in the Solar Guard behind, he knows this is the best decision for him, and sets his mind on becoming the best soldier the Lunar Army has to offer.

EDIT IN 2019: I honestly forgot that I wrote this story and don't remember where this whole thing was going. I don't think I'll finish this one... and it's honestly not one of my better works.