影片根据澳大利亚作家蒂姆·温顿同名畅销小说改编。故事围绕上世纪70年代澳大利亚两个冲浪少年展开。Based on Tim Winton's award-winning and international bestselling novel set in mid-70s coastal Australia. Two teenage boys, hungry for discovery, form an unlikely friendship with a mysterious older adventurer who pushes them to take risks that will have a lasting and profound impact on their lives.