 Edited from 3 episodes ("Aftermath", "Powerplay" and "Sarcophagus") of the third series of the cult BBC SF series "Blake s 7", the story picks up at the end of a mighty space war between the Human Federation and the forces of Andromeda. Caught up in the battle are the crew of the "Liberator" who are forced to bail out when the ship is badly damaged. The survivors struggle to return to the ship but find it in unfriendly hands, then have to face a terrifying alien menace which has assumed the form of crew member Cally...