Blake's 7 Season 3

Avon secretly takes over the ship and flies it through a field containing enzymes which eat away at the Liberator's hull. They reach the planetoid Terminal, where Avon believes Blake is residing.

The crew visits the Teal and Vandor systems, currently at war with each other. A representative of each system is chosen for a battle. Tarrant kills the warrior who killed his brother.

Tarrant is teleported into a spaceship bound for the invisible planet Sardos, which the crew of Liberator discover after nearly crashing into it. Servalan is interested in the matter replication technology developed by the inhabitants of the planet.

The crew go to the planet Ultraworld, only to discover it is a mental reprocessing plant. Vila saves the crew by telling riddles to Orac.

The crew find a drifting ship, whose artifacts have a strange effect on Cally. An alien avoiding death has possessed her, and Avon has to break the spell.

Avon wishes to hunt down the Federation inquisitor, Shrinker, who killed his former girlfriend, Anna Grant. He finds her alive, now working as an agent of the Federation.

Servalan introduces a plague to the people of Auron, and the crew journey to Cally's homeworld to save them. Servalan uses this plan as bait to get the Liberator, and to make clones in her image, the only offspring she feels she could trust.

The crew strike a deal for crystals needed for Liberator's weapon systems. In exchange, Vila must help in obtaining a treasure on the planet Keezarn but in doing so he finds a gateway to another world.

Tarrant decides to raid a Federation freighter carrying valuable Kairopan crystal, but he heads right into Jarvik's trap and the Liberator is captured. The crew of the Liberator are left marooned on Kairos, a planet where nobody survives after the short crystal harvest season.

Orac steers Liberator off course to investigate a black hole and the Thaarn reach out to Cally from her childhood stories. Liberator lands on the artificial planet Crador.

The crew search for a new home base on the planet Obsidian, whose volcanic outbursts -- and a nuclear device buried in the planet's core by its inhabitants -- protect the planet from being overtaken. Servalan employs an elaborate plan to take control of the Liberator.

Avon and Dayna return to the Liberator, only to find it has been claimed by Tarrant. The rest of the crew are rescued by a medical ship and eventually brought back to the Liberator.

Severely damaged by combat in the Galactic War, the Liberator disperses its crew while it repairs itself. Avon lands on a planet and is rescued by the daughter of a former revolutionary. Priceless scenes between Avon and Servalan.