Twelve-year-old Sam has been given a fishing boat by his father, but he hates fishing. Instead he uses the boat to disappear for hours at a time, exploring the forbidden swampy surroundings of his bayou home. Then he discovers a strange kid named Davey, mysteriously alone, repairing an abandoned cabin deep in the woods. Not fooled by the boy's evasive explanation as to why he's on his own, Sam becomes entangled in his own efforts to help Davey. But this leads him to telling small lies that only get bigger as the danger increases for both boys and hidden truths become harder to conceal.