Having a fatherless childhood, young brothers Andrei and Ivan have grown closer than most siblings. But when they least expect it, the father the boys have never known returns. Under the cool midnight sun of a coastal Russian summer, the boys eagerly hop into a car for a fishing trip with a complete stranger they absolutely need to believe is their father. As they travel deep into the wilderness, their journey devolves from vacation to boot camp to father-son love triangle and ultimately to a test of wills that pushes to the brink of violence.