Troy falls asleep, whilst on stand by duty, and dreams of a meeting between him and a group of undersea cavemen who have found the cargo of a crashed ship, the Shenandoah, a vessel which was carrying radioactive material.
Cast
Don Mason
Captain Troy Tempest (voice)
Robert Easton
Lieutenant George Lee 'Phones' Sheridan (voice)
Ray Barrett
Commander Sam Shore / Sub-Lieutenant John Horatio Fisher (voice)