For Balduin, going out to beer parties with his fellow students and fighting out disputes at the tip of the sword have lost their charms. He wants t

讲述了两个自由潜水人引人入胜的故事，两个来自旧金山的世界肺潜冠军，佩彭·弗瑞尔瑞萨和温贝托·佩雷茨佐瑞。十余年来，他们先后尝试，完成不可能的任务 - 下潜到最大深度，用单程呼吸的氧气安全返回水面。