It was written and directed by the Zellner brothers, and each has a featured role in the movie. The basic story is a man, Robert Pattinson as Samuel, heads west to find his damsel who he thinks has been kidnapped. He plans to rescue her and ask her to marry him. The damsel is Mia Wasikowska as Penelope.
The opening scene sets the tone, David Zellner plays a man new to the west, fascinated by the prospect of meeting real Indians, and waits for the stagecoach with an old pioneer (Robert Forster) who is tired and headed east. The stagecoach doesn't show up but the old man gives away his belongings including a tattered bible, so the new man takes on the name Parson Henry.
There is no advantage in describing the story in greater detail, suffice to say Samuel has a total misunderstanding of the situation and it doesn't turn out well for him. When the movie was over we were both a bit puzzled as to why this particular story was put to film and what the filmmakers were really trying to accomplish.
I cannot recommend it to anyone I know.