Keeper of the Mountains is a portrait of Elizabeth Hawley and her unlikely key role in the Golden Age of Himalayan mountaineering, her defiance of the traditional gender roles of her day and her decision to settle alone in Kathmandu in 1960, where she has famously lived life on her own terms ever since. Hawley, 91 and a former journalist, maintains the world's largest and most treasured archive of Himalayan mountaineering expeditions and her work is trusted by news organizations and publications around the globe. All this despite never having climbed a mountain herself.

In this documentary, Bear Grylls takes us on a journey through the most extreme version of the world's highest and most legendary peak: Mount Everest. Several leading figures in mountaineering and extreme sports, for whom a standard ascent is no longer enough, transform Everest into a laboratory for extreme challenges. Told through archival footage and reenactments, this elite group seeks new forms of performance, attempting to ski the slopes, snowboard down them, hang-glide or paraglide above the summit ridge, open new routes on more technical and exposed faces, and break climbing records. The documentary also highlights the essential role of the Sherpas, the colossal logistics behind each attempt, the explosion of commercial expeditions, and the moral debate surrounding the ever-increasing risks involved in breaking records or achieving unprecedented feats.