A scientific expedition happens to discover that gold exists on Tarzan's escarpment. The villainous Medford and Vandermeer kidnap Jane and Boy to extort from Tarzan the location of the gold.
A criminal known as Thunderbolt is imprisoned and facing execution. Into the next cell is placed Bob Moran, an innocent man who has been framed and who is in love with Thunderbolt's girl, without knowing of their relationship. Thunderbolt hopes to stave off the execution long enough to kill young Moran for romancing his girl.
An American newspaperman and his wife, end up in London after several retreats in the opening days of WWII. After a shrapnel wound and loss of her baby she returns to America. War weary, he is forced to do a story about war orphans, where he meets Margaret.
