Technically speaking, not much happens in Pioneer, David Lowery’s 2011 short about a man who tells his son a bedtime story. The action is confined to one room as it cuts between the two actors, but the yarn spun by Will Oldham’s character, and the subtle inflections in the pair’s performance along with a textured sound design, make the film as charged as any meticulously choreographed exchange. Listen closely, and you can even discern some early seeds of Ain’t Them Bodies Saints in the mix.