Start by assembling a bunch of stories/scenarios, cut them into pieces and reassemble in some random fashion.
Clergy (background unknown) driving to a new congregation somewhere down south. Spots a body lying on the side of the road in an isolated barren landscape. Next scene that person is sitting in the clergy's van. His background is never really clear. This not too talkative stranger decides to become a preacher (Why? Makes no sense.) By the way talking is a job requirement. Oh, Spanish speaking is required which he doesn't speak. Our writers added an odd sheriff w/romance side show. Finally, more not explained or believable events occur the most absurd being the closing boat scene.