In remote Western Australia, two estranged farmer brothers, Colin and Les, are at war. But when Les' prize ram is diagnosed with a rare and lethal illness, authorities order a purge of every sheep in the valley—so the brothers must work together to reunite their family, save their herd, and bring their community back together.

After the death of his pregnant wife, a religious man rejects his Faith, and mockingly challenges God and the Devil as he struggles with the desire for revenge.