I recently listened to this audio drama and really enjoyed it! The story was compelling and I immediately was drawn into the world the writers created. There's a bookend story (a short section at the beginning and end that set up and conclude the main story) which takes only a small portion of the time and then an intriguing story set in some undefined time in history (think 1800s or so) that takes up most of the listener's time. There's a touch of the Prodigal Son story in here, though not a direct allegory. Everything was very well done, which I expected once I saw that a lot of people involved with Focus on the Family's Radio Theatre and Adventures in Odyssey productions were also involved with this, though this is not connected to FOTF.
I highly recommend this to families or adults - I think this appeals to a wide variety of age groups. Good stories like this are for everybody!