When his daughter goes missing from their prairie town east of France, Alain and his young son, Kid, head out to find her. The journey takes the men to some far-off and unsettling places in what begins to feel like an endless quest.

Algeria, 1954. Two very different men thrown together by a world in turmoil are forced to flee across the Atlas mountains. Daru, the reclusive teacher, has to escort Mohamed, a villager accused of murder.