After saving the Earth from a devasting collision with a runaway comet, Flash Gordon is forced to crashland his spaceship on Mongo a bizarre planet ruled by the tyrannical Emperor, Ming the Merciless. Flash and his companions, Dale Arden and Dr. Hans Zarkov, face slavery and death at the hands of the evil Ming. To save themselves and liberate the citizens of Mongo, they set off on a series of thrilling adventures..