So Nick Fury is being pulled through the air by a nuclear missile heading for Washington while Captain America and Spider-Man find themselves plummeting from the airborne Thunderhead Island, lair of the villainous Sultan. Spidey manages to web onto the floating island but he can’t reach Cap. Spidey is then surrounded by Sultan in a jet pack and his robot gang. An impressive aerial battle between the falling Cap and a number of flying robots ensues with Cap defeating all of them and seizing a jet pack to return to the villain’s lair….
Meanwhile, Nick Fury manages to gain entry to the rocket to disarm the nuke but he is shocked to discover that there is no nuke, this missile was a decoy from the real weapon: Thunderhead Island….
Cap rescues Spidey and they enter that Island to once more battle the villain and his minions. In the melee, Sultan is knocked out of this jet pack by Cap and plummets to the floor. He is inexplicably dead but a small module detaches itself from his body and zips away. The robots all come to a halt with the death of their controller. Cap and Spidey jet from the flying fortress and make it safely to the ground. There they are ambushed by Sultan, whose consciousness has inhabited a fully robotic body. As the heroes take on another set of robot henchmen, a glow comes from the direction of Washington. Sultan rejoices in the destruction of the nation’s capital which prompts an angry Cap to tear into him, eventually using his shield to block the villain’s energy blasts. The power builds up inside him and Sultan’s robot body explodes. His personality capsule jets off again, only this time Nick Fury shoots it out of the air. Fury then explains that the glow in the sky was SHIELD craft shooting down Thunderhead Island….