Ep 5. Season I - Episode 05 - The Fog

In a strange, new place, the tribe is trapped by a fog that sets like concrete. - trapping them. They blame Enyo for their predicament. They are freed by Enyo who finds a way to cut through the fog - but as they hastily leave the area, the fog returns once more. This time it's over their heads. If it sets, they're history. Enyo has to placate the creature who controls the fog.