Swooping from the skies, the Hawkmen cature Flash, Thun, Princess Aura & Prince Barin. The group are taken to Sky City home of the Hawkmen and their King Vultan. The winged monarch announces that he will marry Princess Aura and orders that the others be sent to his Atomic Furnaces as slaves. For Vultan's interference, Ming launches an attack on Sky City. The Hawkmen prove to be no match for Ming's rocket fleet, and soon Sky City faces complete destruction...
