In the middle of a hot, stormy summer by a tourist lake, seventeen-year-old Purdey and her younger brother Makenzy walk the line between experiencing adolescence, finding love and fending for themselves. While Purdey works as a cleaner in a hotel complex, Makenzy earns some money by robbing tourists. Left to their own devices, they must learn to support each other in a surprisingly tender journey that chronicles what feels like the last summer of their youth.