Sam is a kid at the edge of adolescence who’s on the run with an older boy named Nick. No one’s sure what they’re about, least of all us viewers. As they motor across a sparse landscape and hole up in an isolated cabin, the contours of their relationship grow darker, and signs emerge of the violent past they’ve left behind. Co-directors Christopher Radcliff and Lauren Wolkstein infuse this twisted coming-of-age thriller with disquieting mystery and picturesque beauty.