All three Flash Gordon serials, "Space Soldiers" (1936, 245 min., 13 episodes) - Internationally renowned polo player and Yale graduate Flash Gordon and the lovely Dale Arden are enlisted by Dr. Hans Zarkov on his quest to save Earth from being destroyed by the runaway planet Mongo. "Flash Gordon's Trip to Mars" (1938, 299 min., 15 episodes) - A mysterious beam of light emanating from Mars is sucking the nitrogen from the Earth's atmosphere, and only Flash Gordon can stop it, battling Queen Azura, the Clay People of Mars, and his mortal enemy Ming the Merciless! "Flash Gordon Conquers the Universe" (1940, 234 min., 12 episodes) - A rocket is dropping purple dust into the Earth's atmosphere, causing instant death! Can Flash Gordon stop the madman from Mongo while retrieving the antidote to the death dust from the frozen planet of Frigia?