The Arcadia needs repairs, but a complicated part is needed. Tochiro knows of one man who make it, but that man lives on a planet ruled by the Illumidus.

Searching for answers, the Arcadia visits a space station devoted to transmitting information.

After a trip to a planet covered in water, an explosion causes the full water tanks of the Arcadia to empty, forcing them to make an emergency landing on a planet made of metal.

The crew of the Arcadia try to take much needed shore leave on a neutral planet. They are forced to leave because of the Illumidus' treacherous and destructive ways.

Mr. Zone has built a ship that he is sure will destroy the Arcadia once and for all.

The Arcadia encounters a strange golden ball of light that leaves La Mime terrified.

The glowing golden ball continues to be a mystery, and Mr. Zone gains an armada.

Rebi sneaks a cat on board, an act which threatens to doom the whole ship.

Rebi's cat breaks Tochiro's radio, sending him storming off the ship. Rebi, Tadashi and Dr. Ban go after him, and soon all four of them are stranded on a dangerous planet.

Emeraldas has been surrounded by the Illumidus, and the only way to get the Arcadia there in time is though a dangerously radioactive part of space.

Mr. Zone tricks Captain Herlock into the deadly grasp of a mad and murderous computer.