This set of 4 DVD's includes Bugling Bulls and Beyond Volume 4, "WORSE THAN WOLVES", Along with Bugling Bulls and Beyond Volume 1, Bugling Bulls and Beyond Volume 2 and Calling All Cows, Bugling Bulls and Beyond Volume 3. This set now also includes an Audio Only MP3 Disc of Vol 1 - 4 for listening in your vehicle of for easy transfer to iPods or other MP3 players. So there are a total of 5 discs in the container.