"The Time Machine": Jace's time machine invention accidentally sends Jan back in time, where she is taken captive by a Viking named Tarko the Terrible. When Jace also gets captured trying to save her, it is up to Space Ghost to rescue them. "Danger River": After rescuing a kid from some Birdmen, Dino Boy and Ugh row along the Danger River to bring him home, where they encounter various threats like the Snake People and dangerous river rapids. "Nightmare Planet": Dr. Nightmare is planning on taking Space Ghost's brain for his mechanical monsters.