Only on Earth is an immersive, visually striking film anchored in moments from a summer marred by extreme heat and drought, where inextinguishable wildfires rage for days. The film is deeply rooted in the mountainous landscapes of Southern Galicia, one of Europe’s most vulnerable forest fire zones. Kilometers of wind turbines extend across these lands as ghostly white behemoths cloaked in mountain mist.  Below them graze las bestas: the small, hardy European wild horses that have roamed these lands freely for centuries under the watch of local cowboys. They are indispensable when it comes to fire prevention as they keep down the flammable undergrowth. But the horses are becoming fewer and fewer in number, and some fear they may soon vanish entirely in the clash between human progress and nature. At the same time, the true cowboy lifestyle is becoming a thing of the past. The film takes on multiple perspectives. Extraordinary firefighter San, who specializes in forest fire analysis, a job taking him to the frontlines of the most dangerous fires; ten-year-old Pedro, an aspiring cowboy; Cristina, who lives a life close to nature, for better and for worse, as both a farmer and a firefighter; warm-hearted vet Eva, who works with horses, both wild and tame, and who’s also a genuine cowboy on par with the guys; and the animals, especially the horses, who are always returning our gaze when we look at them.