ultimatum

Dr. Karol Noymann (Carradine), an atomic scientist, is killed in a laboratory explosion. His colleague, Dr. Adam Penner (Tonge), is disturbed by the accident and resigns…

When a flying saucer lands in Washington, D.C., the U.S. Army quickly surrounds it. A humanoid emerges and announces that he comes "in peace and with good will". When he…

In Japan, scientifically advanced invaders from the war-destroyed planet Mysteroid cause an entire village to vanish, then send a giant robot out to storm the city by…

Starship C57D travels to planet Altair 4 in search of the crew of spaceship "Bellerophon," a scientific expedition that has been missing for 20 years, only to find…

Five individuals from five nations, including the USA, USSR, and China, suddenly find themselves on an alien saucer, where an alien gives each a container holding three…