Arc is a heavy weapons specialist. Roxy is a lycan. They're married. And together they protect Equestria from things that go bump in the night. Things your average pony doesn't know about. Things the Royal sisters want kept quiet.
Managing supernatural affairs is usually just another boring public service job, at least until an arms dealer turns herself in, claiming she wants to be good. After that, all Tartarus breaks loose. Arc and Roxy have to figure out what lunatic keeps blowing things up around the city before it's too late.
Editing and cover art by Dafaddah