The Professor and his assistants finds the city of Atlantis, which may be their way back to the surface.

Saknusemm stops the professor's group from advancing further along the path they are trying to follow. They then have to find a alternate means of going on and discover a strange city full of odd creatures.

A river from Greek myth leads the explorers to a lost civilization. Saknussemm and Torg are captured along with Alec by the mysterious people.

Bee people capture Professor Lindenbrook and those with him; a alliance is formed so they can escape the hive.

The Frozen Furies drill into a glacier which endangers the people living on the surface world.

The group arrives at a magnetic island full of magnet people who want a boat.

The professor builds a swamp buggy when Count Sacnussem destroys a bridge and swamp creatures end up capturing Lars and Alec.

Wolf men working with Count Saknussem capture Alec; Lars and Cindy work with descendants of the ancient druids.

While battling a pterodactyl, Lars injures his arm; a tribe of prehistoric cavemen capture the professor and Alec.

After finding a creature trapped in a pit, Count Sacnussem lures Professor Lindenbrook and his companions into a trap; The group is captured by a giant.