Plundering innocent worlds; that is Doc Roberts’ job and he is good at it. He is awarded a Letter of Marque and a territory to hunt in exchange for his service to the Alliance and of course, a cut of his take.
The Alliance government can’t openly operate in Coalition territory without starting another war, so they use privateers like Captain Roberts to destabilize governments and cause unease among the people, in hopes that they will ask for Alliance protection.
Cheating and treachery cause Captain Roberts to reevaluate his loyalty. He can live with a little pilfering, but not outright stealing from him and trespassing on his planet. The Alliance has gone too far. It is time to teach them that there is a price to pay for stealing from him.