In Kabylie, rude mountain region in the north of Algeria. Arezki finds the young Larbi exhausted, buried under the snow. He takes him in and nurses him until he's recovered. The host seduces Arezki's daughter. She is pregnant. This is an unsupportable shame to the father of the female sinner. Arezki claims vengeance. He leaves his house and takes the oath not to come back before having killed Larbi who betrayed him under his own roof.