17-year-old Sam embarks on a backpacking trip in the Catskills with her dad and his oldest friend. As the two men quickly settle into a quarrelsome dynamic, airing long-held grievances, Sam attempts to mediate. But when lines are crossed and her trust is betrayed, tensions reach a fever pitch.

Tree trunks deliver privacy, and brooks fill water bottles: The mountains provide in India Donaldson’s keenly observed debut. Lily Collias gives a poignant performance as a graciously overburdened daughter, balking at the tribalism and dated gender dynamics that rear their ugly heads in the woods.