In a remote valley in Iceland, Gumi and Kidi live side by side, tending their sheep. Their centuries-old breed is considered one of the best on the island and the brothers regularly receive awards for their invaluable rams that continue the traditional line. Although they share a country and a way of life, they have not spoken a word for four decades. When a dangerous infection attacks Kidi’s sheep, the entire valley is in danger. Authorities decide to destroy all the animals in the area in order to stop the epidemic. For farmers for whom sheep are the main source of income, this is tantamount to a death sentence and many leave the country. But Gumi and Kidi don’t give up so easily – and each in their own way, trying to prevent a catastrophe.