Debt collector and sometime-killer Roy (Ben Foster, 'Hell or High Water') survives a death-trap assignment set by his loan-shark boss. The would-be killers are mostly dead and he is just about alive. Before making his getaway, Roy discovered a young prostitute, Rocky (Elle Fanning, 'The Neon Demon') hiding in the back room, and he sees something in her frightened, defiant eyes that prompts a fateful decision. He takes her with him as he flees New Orleans to Galveston - an action as ill-advised as it is inescapable.
