True to Ayer’s longstanding fascination with bonds forged through hardship, evident in “Fury” and “End of Watch,” the film becomes a captivating survival adventure built as much on trust and devotion as action and suspense, anchored by a restrained yet affecting performance from Brad Pitt and a remarkable canine counterpart. Yet the film’s emotional power ultimately proves more compelling than the escalating perils of the adventure itself. As the ordeal grows deeper, the film reveals with increasing clarity the relationship that makes survival possible.

For James Belmont (Pitt), a retired Special Forces veteran, and Odin (Uber), his traumatized former combat dog, the Alaskan wilderness initially offers something resembling peace. Surrounded by towering peaks and secluded lakes, the brothers-in-arms spend their days fly-fishing, hiking and traversing the wilderness by plane, embracing a solitude that feels both restorative and hard-earned. The scars of war appear momentarily distant. Then a heart attack sends James’ aircraft tumbling from the sky, transforming refuge into ordeal and forcing both survivors into a brutal fight against the elements.