ONLY ON EARTH takes us on an immersive and visually striking journey into Southern Galicia, one of Europe’s most vulnerable wildfire zones. During the hottest summer on record, humans and animals struggle as inextinguishable fires draw closer. Wild horses, vital in curbing flammable undergrowth, have roamed the mountains for centuries – but their numbers are dwindling as human development clashes with nature. Through the eyes of the horses, a young cowboy, a firefighter, a vet, and a farming family, the film reflects on the fragile balance of our natural world and human-animal relations.