Sam, Moses, Matt, and Quickshaw

Sam, Moses, Matt, and Quickshaw become great friends and share numerous adventures that lead to an exciting discovery-an underground water passage that connects to a hidden city. Its human inhabitants believe theirs is the only civilization in existence. Once word reaches the public about the secret city, fortune hunters want to find its location, believing it to be a source of great wealth. But the real treasure is the love these people have for each other and the peaceful harmony in which they live.

The city holds an intriguing secret that renews Matt's interest in finding his family, presumed to be dead. Could they possibly be alive after all this time? Matt has some big decisions to make, and hopefully he can stand by them .