McKeever and Buckley teach a young geologist and her assitant to dive so they can reach inaccesilble terraln, but the sceintists fall into unmapped terrain and become the prisoners of a long-lost tribe descended from the Aztecs.

A couple makes a bet about skydiving. Nick bets that she can't train any normal guy to be a skydiver. Evvie picks Willie, a construction worker. Ted and Jim teach the local boy to parachute, without much hope of success-but he finally surprises them.