Along the Siberian Arctic’s Chukota coast, a decaying shipwreck lies forgotten on the sand. A solitary scientist has traveled to this isolated spot, shrouded in thick September fog, hoping to observe a natural occurrence. He's fortunate to have a small wooden structure for protection, as he must wait and study old books that detail past events at this location. He gathers wood to ward off the growing coldness carried by the wind. There’s still no indication of what he’s waiting for. Suddenly, he’s roused from sleep by a sound—the noise of a large group of walruses arriving on the beach to breed. They gather around his small dwelling in a dense mass of about twenty animals, and their combined weight could easily crush it, but they seem drawn to it and approach cautiously. He climbs onto the roof to watch as they begin their activities: displays of dominance, some posturing, and mating rituals. It’s now October, and he believes there are roughly 95,000 of them! Essentially confined inside, he tries to cobble together a cigarette from old scraps, and thankfully, they don't appear to detect the smell of his canned fish. What is increasingly concerning is the complete absence of ice—not even a single snowflake. These animals need it for resting and feeding; without it, they are forced onto the beach in large numbers. After approximately forty days, as if responding to some signal, they begin to return to the open water, almost entirely disappearing except for about 600 bodies left behind for scavenging birds. It’s at this point that his investigation truly begins: what caused their deaths? Could it be malnutrition, exhaustion, or overcrowding? Is this a sign of climate change impacting their food sources and/or the temperature of the water? The film avoids narration, relying solely on striking visuals to prompt viewers to consider questions about the future of this age-old migratory pattern.

Source on TMDB