Robby Miller (Bralyn Stokes), a former army soldier leaves the military after his wife's sudden death to raise his son JJ (Jackson Hammer). As the pressures of single fatherhood and his wife's death start to build, Robby finds himself in a place he never thought he'd be.

The mountains are a barometer of the state of the world because global warming is three times more visible there than elsewhere. After a year marked by the confinements of March and November and the closure of ski resorts, the high peaks have regained their appearance of the first days. It is in this fragile setting of beauty that a young committed rope party sets out to cross the heart of the Alps on ski touring, to decipher for themselves the visible and invisible signs that threaten them, and to question a situation that goes beyond mountaineering

克雷格·利森（《塑料海洋》）执导的40分钟IMAX版纪录片。他历经4年，走访12个国家，记录下地球上最重要的自然资源之一——冰川，因全球气候变化而受到严重威胁，警醒人类即将面临地球水库逐渐消失的危险。影片采访了联合国、北极露营基地等的专家，甚至跟随美国国家航空航天局参与飞越南极洲的任务，通过测量海冰的消失，用数据直面现实环境的威胁。里森还克服恐高症，两天内两次与极限运动员攀登秘鲁一座5800米的山峰，借助滑翔伞飞越的第一视角，完整呈现冰川融化的山体特征，目睹自然界的脆弱性。

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