All-American space hero Flash Gordon (played by Larry "Buster" Crabbe) once again does battle with the devious Ming the Merciless (Charles B. Middleton) in this vintage sci-fi adventure. Ming has, as usual, set his sights on conquering the Earth, and has designed a new weapon with this in mind - a special metallic substance that will burst into flame in our atmosphere. After testing this on Arboria and laying waste to Prince Barin (Roland Drew) in the process, Ming heads for Earth; to see that his nemesis ...