Macky and his family have left Alexandria and have sought safety amongst some desert ruins. Macky argues with his father that they have run away from their responsibilities and Samuel tells him the story of Jonah and the Sailors, showing that it is never really possible to leave behind responsibilities. Searching for Samuel back at the shop, a vengeful Tobias arrests their neighbour Nathan and Sollie brings this news to the family in the desert.

Returning to the city, Samuel and Macky meet a thief, their old adversary Caleb. When Caleb recounts the story of the Prodigal Son, they know he is no longer a thief and enlist his help to free Nathan from prison. But to their horror, they realise Tobias had been using Nathan as bait to capture Samuel…