Synopsis by Hans J. Wollstein
Dave (Kirk Alyn) and Laura (Rosemary la Planche) bail out right before their clipper plane explodes, parachuting safely into Abistahn. Their luck, however, runs out at the tomb of Kurigal. Captured by Ali (Jack O'Shea), Dave and Laura are thrown into a room occupied by Professor Clayton (James Craven), who pretends to be a prisoner himself. Planning to double-cross Nila (Carol Forman) and keep Kurigal's treasure for himself, Clayton helps Dave and Laura escape in Nila's car. The evil Abistahnian learns of their approach by interpreting the jungle drums and has her natives mine a bridge in their path.