THE CALL OF THE SIREN follows alpinists Matteo Della Bordella, Symon Welfringer and Silvan Schupbach on a human-powered expedition to Greenland, where sea kayaks carry them toward remote walls far beyond any road. Why This Film Matters: It belongs to a growing movement of climbers who reject helicopters and motors for the slow, committing craft of reaching a mountain under their own power. The result is both a striking adventure and a quiet argument for a lighter, more self-reliant way of meeting the wild.