The Federation prison ship London encounters the abandoned Liberator, which Blake, Avon and Jenna manage to steal.
The departure of the prison ship London is brought forward to ensure that Blake does not receive a reprieve, and the long journey to the prison planet Cygnus Alpha begins.
The guards are brutal and the long journey looks very unpleasent. Blake, with the aid of other prisoners including Vila, Jenna, Kerr Avon and Oleg Gan attempt a coup and manage to gain control of the ships computer room.
In an effort to regain control, the first officer, Sub-Commander Raiker, starts executing one of prisoners every thirty seconds until Jenna, Avon and Blake surrender. Despite Avon's complaints, they surrender rapidly - although a few more prisoners are executed.
With the prisoners back in their cell, the crew of the London detect a large apparently derelict ship floating nearby and decide to attempt a salvage operation. After several crew members are lost in the attempt, the captain decides to send Jenna, Blake and Avon into the derelict ship to recover the lost crewmen.
Within the alien ship, they start to succumb to a self-defence system that uses their memory against them, but Blake's knowledge that his memories are falsified allows him to duck the illusions it generates and save the others.
The three of them gain control of the alien ship which Blake names The Liberator, and manage to escape with the help of the ship's computer Zen. Raiker is killed in the escape attempt.
You need to Log On to review episodes.