 A signal from Buddy Deering on Mars warns Earth that the Tiger Men of Mars and their cruel king have broken their treaty and are attacking. Buck Rogers and Wilma Deering go to rendezvous with the Earth battlefleet before setting off to fight the tigerships. Baldpated genius inventor Dr. Huer uses the "cosmic radiotelevision" to watch the space battle. Which side will be victorious? The tigerships and their paralysis ray? Or our Earth forces, armed with the flash ray and Dr. Huer s new magnetic ray?