On the wild, lonely coast of Western Australia, two thrillseeking and barely adolescent boys fall into the enigmatic thrall of veteran big-wave surfer Sando. Together they form an odd but elite trio. The grown man initiates the boys into a kind of Spartan ethos, a regimen of risk and challenge, where they test themselves in storm swells on remote and shark-infested reefs, pushing each other to the edges of endurance, courage, and sanity.