The matriarch of an Arizona boomtown receives the unlikely help of a notorious outlaw to rid her town of a ruthless Marshal and the corrupt Territorial Judge who employs him.

I see a lot of good characterization here, however, not much else. Is the story comedy/drama about trying to get rid of them? Or about what happens after they get rid of them, and when then try come back?

An unlikely duo join forces to rid a small town from a corrupt judge and his loyal sidekick when/but...

"Receives the unlikely help" is passive. Better would be something like "employs" or "enlists". And what's at stake? What has she got to lose if she fails?