Dr. Mortula lives an eternal life on a clouded asteroid, devoid of any sunlight, to protect himself by the sun's rays. In order to free himself and travel the solar system, Mortula tries to persuade Rocket Robin Hood in destroying the sun.
Erik Arthur, the Captain of the Viking ship "The Space Wolf," seeks and pillages space vessels. Driven by a false lead for great wealth from the scoundrel Sheriff of N.O.T.T., Erik captures Rocket Robin Hood.
When a billion dollar shipment in gold was robbed in transition from the Interplanetary Bank on earth by the villainous Doctor Magnet, he rigged the crime to frame his nemesis, Rocket Robin Hood.
The trees on the planet Planeton have turned into ferocious dinosaurs set on destruction, guided by Dr. Manta, the evil scientist who wants to rule over the world.
Rocket Robin Hood and Little John assist the younger Ulysses to recover the Golden Fleece protected by his enemies, the giant Cyclops, the Hydra, and Medusa.
Rocket Robin Hood, Little John and Will Scarlet are enlisted by the U.S.S. to save the densely populated planet Thor, captured and miniaturized by the evil Cosmo Khan.
The peaceful civilization of Caldomar has been built on the trees which cover its planet. Prince Sim invites schoolmate Robin and his Merry Men to a celebration. Count Phantasmo attempts to conquer the planet and steal its energy-rich soil.
Rocket Robin Hood and Will Scarlet are on a wild space boar hunt when they are arrested by the Sheriff. Prince John uses his new teleportation device to exile them to the far universe, but he breaks it leaving them on an unknown world.
Rocket Robin Hood answers an SOS call and travels to the fringe of infinity. He is pulled down by a degravitational ray crashing onto the eternal planet of Romarama.