Boothe Howard

Singing cowboy Autry helps Arizona cattlemen try to build a dam that will bring water to their parched lands, while businessmen plot their sabotage.

Following a string of suspicious earthquakes, a professor leads an expedition in his rocket submarine to the rumored location of Atlantis.

A jail escapee hops on a train, throws the singing cowboy off, and swaps their clothes, framing him for the robbery and murder of an old friend.