In the plains of Patagonia, three horsemen trot against the backdrop of majestic mountains, their mission shrouded in silence. Driven by colonial ambitions, Lieutenant MacLennan is at the front. Bill, an American mercenary, does not hide his hatred for foreigners, and Segundo, a mestizo, is haunted by a bad feeling. The deeper the riders descend into the harsh terrain, the more apparent their goal – the brutal eviction of the Onas people, Tierra del Fuego natives.