"The Heat Thing": A lava monster attacks Jace on Jupiter (incorrectly depicted as a cratered rocky planet). Space Ghost must save him from the monster. "The Worm People": A tribe of worm-like creatures captures Dino Boy and Ugh must plan a rescue. "Zorak": Zorak, one of Space Ghost's enemies, is freed from prison by his henchmen and kidnaps the twins in a revenge plot against Space Ghost.

"The Lizard Slavers": Lizard-like slavers capture Jan and Jace for stumbling across their base. "The Moss Men": While running from a T-rex, Dino Boy and Ugh are captured by the Moss Men after falling into a water-filled hole that leads to their lair. The Moss Men plan to use Dino Boy as a sacrifice. Ugh must defeat the Moss Men and rescue Dino Boy before it is too late. "The Web": The Black Widow plans to kill Space Ghost with her minions the Tarantopods on her planet.

"Creature King": After suffering a reactor burnout, Jan and Jace land on a planet where huge animals live and are controlled by the Creature King. "The Treemen": Dino Boy is captured by a group of Treemen to serve as a sacrifice and Ugh must leap into action with the help of some mammoths. "The Sandman": The Sandman has attacked military units to draw Space Ghost to him in order to destroy his mind and conquer the world.

"The Evil Collector": The Collector shrinks people to use in a real-life cat-and-mouse game involving his pet six-legged alien cat Dracto. "The Fire God": A Fire God captures Dino Boy. The Saber-Tooth People plan to sacrifice him, but Ugh is determined to foil them. "The Drone": A mysterious figure uses a robot to steal the Phantom Cruiser. Space Ghost and the twins must retrieve it.

"Homing Device": Metallus threatens to destroy Earth with a missile unless Space Ghost surrenders to him. "The Mighty Snow Creature": Dino Boy and Ugh venture into the snow-capped mountains to rescue a young tribal girl from a large Snow Creature. "The Robot Master": Metallus uses a robot fleet to take over Space Ghost's planet.