Plot:
Earth is in panic from the terror of the Purple Death, a terrible disease striking all over the planet.

With terror in the streets, who could save the world...
Flash Gordon, Dale Arden, and Professor Zarkov are trying to track the Purple Death and discover it came from the planet
Mongo. Returning to Mongo and meeting with Prince Barin, they learn that Ming is still alive...
Of course, Ming is doing some more of his evil schemes by having his Purple death dust to be modified not to kill the lesser
intelligent ones so they can become slaves.
Flash, Zarkov, and Dale join Barin on a mission to rescue the General Lupe of Queen Freen of Frigia...Flash, Barin, and
their soldiers sneak in to save Lupe from Ming.
Ming is more concerned about the Earthers learning that polarite, the only cure to the death dust is in Frigia.
Rocket chase ensues...

Special effects before computer animation...
Well, our intripid heroes learn of polarite. However, they have to be trained to endure the cold in Frigia. After
reaching Frigia, they land to mine the polarite. Let the mountain climbing ensue as Ming's ships start bombing which
causes avalances.. Flash and Barron are trapped in a deep chasm.

So cold, almost as cold as an employer's heart...
Zarkov manages to drive Ming's rocket away and then picks up Flash's emergency beacon. He scrambles a rescue party to
pick them up...
Ming sends his soldiers back after Flash and the others. This time they use remote controlled robo-soldiers to stop
Flash from getting the polarite. Dale and Zarkov get captured and taken to Ming.
Flash and Barin take the polarite to Earth before trying to rescue Dale and Zarkov...
Ming wants Zarkov to work for him to create a better cold preservation so he could have his soldiers could conquer
Frigia and to marry Dale.

It's good to be the evil warlord who is known as Merciless...
Flash returns and sneaks into Ming's castle. Ming is having Zarkov tortured when Flash runs in to rescue him. He
tells them how to escape.
Ming offers another job opportunity to Zarkov.
Flash finds Dale and learn that Zarkov wants to stay behind to destroy Ming's castle.
Well, another scientist talks Zarkov into escaping with the others as Barin's ships approach.
Another rocket chase ensues. Flash has had to take one of Ming's rockets to escape. Unfortunately, the radio is damaged, and
they can't contact Barin's ships.

Can anyone else sing "Flash Ahhh-hhhhaGordon" like Freddie Mercury?
Flash does manage to send a morse'like code that Barin does decypher. He brings our heroes aboard.
The narrator explains that Earth was saved by Flash...