An unconvincing story about a pilot and a radio commentator who crash-land on an island near Australia. What they find is mad scientist Napier and his three daughters, tagged Venus, Urana, and Mercuria, who've never seen men before (that doesn't say too much for dad). When commentator
Richards threatens to expose Napier and his atomic experiments, the angry scientist destroys their airplane, thus stranding them. However, with the help of the daughters, Richards builds a raft. Before it is completed, the scientist causes a violent explosion, bringing an investigation from
Australia and an eventual rescue.