Release Message:  Buck Rogers (Buster Crabbe) escapes from a wrecked rocket ship, battles with a strange race of men on the planet Saturn, and deals with the treachery of Killer Kane.

Description:  Using their de-gravity belts, Buck, Buddy, and Wilma make a safe landing on Saturn after their ship has been bombed by Killer Kane's, men who have followed them. In a pitched battle Buck and his friends are captured by Captain Lasca. Both groups are captured in turn by the Saturnians, who take them to the great council of the wise for judgment and sentencing. Here, Lasca convinces the rulers that Killer Kane is a just and kindly monarch. Only fast action permits Buck and his party to escape prison and return to earth in one of Lasca's spaceships. Entering the gates of Hidden City in their strange craft, Buck's ship is crushed as the gates close upon it and all the occupants are apparently killed.