Arkon vae, a bounty-hunter, is hired by Ming to capture Flash Gordon. Our heroes are sent on a mission into the past to the north polar region on Mongo, to find out what happened to the civilization of lizard people who lived there.
The lobus, a creature Ming had created of nuclear energy, escaped into the jungles of Mongo and has now returned to wreak havoc. Vultan's sky city is falling and as Flash, Dale and Thun rush to his aid, they are captured by Ming.
Ior, of the cavern city, sends mutant soldiers to capture people from Arboria (along with Flash, Dale and gremlin), to play in the game. Ming and enak launch a synthetic meteor to the city of Arboria, which contains a plant-monster.