Flash has fallen in love with Azura, a beautiful queen and Dale and Khan cannot understand why Flash does not recognize them. They later realize that Azura has drugged him and they attempt to poison her, but the plot fails when the queen orders Flash to be served first. To save her sweetheart, Dale drops the tray, spilling the poisoned food on the floor. Azura, furious at the apparent clumsiness orders her to be punished…

In a tournament of death, Flash Gordon wins the unconquered Kingdom of the Caves. Having picked up a company of King Voltan's hawkmen the huge rocket ship bearing Flash and Dale to their new kingdom heads for the yawning mouth of Kira, the wild and forbidding cave world…

Whilst imprisoned Flash met Boon, the powerful, huge, bearded prince of the Lionmen and Prince Barron a former member of Emperor Ming's court. Joined by Dr Zarcov, these four friends joined together to overthrow the government of Emperor Ming and rescue Flash's sweetheart, Dale Arden. They were almost successful but at the last moment, they were recaptured by Emperor Ming's soldiers and were condemned to a fate far worse than death…

Flash and Dale are captured by the King's men. Princess Aura appears and again saves Flash, who in turn tries to free Dale, but the king captures the princess and Flash. Rather than remain a captive the proud Aura hurls herself over the cliff, only to be caught by the terrible leaves of a constrictor plant. Flash rushes to her aid…

Another planet is hurtling towards the Earth threatening to collide with it. Flash Gordon have to save the planet by shooting a rocket at the planet, named Mongo, and destroying it. If they don't succeed there will be devastation on Earth, if Earth can survive the collision…