Another adventure for everyone's favourite Time Lord. The Doctor (Tom Baker), Sarah and Harry land on space station Nerva, where the chosen few of the human race are in suspended animation, awaiting the call to revive. However, an insectoid alien life form known as the Wirrn has infiltrated the Ark and cut through the humans' alarm clock. The Wirrn now intend to use the sleepers as the hosts for their hatchings and claim the Earth as their own.

The entire third season (remastered) of the 1970s BBC sci-fi series created by Terry Nation. In 'Aftermath', the crew abandon the Liberator in the wake of the Andromedan attack. Avon is rescued by Dayna and her fugitive father. 'Powerplay' sees Avon and Dayna battling for control of the Liberator with Federation officer Tarrant, while Cally and Villa are hostages in a sinister hospital. In 'Volcano', the crew of the Liberator, with Blake and Jenna now missing, arrive at the planet Obsidian. 'Dawn of the Gods' sees the crew at threat from a creature from Cally's legends. In 'The Harvest of Kairos', Servalan captures the Liberator and strands the crew on a deadly planet. 'City at the Edge of the World' sees Villa finding love and adventure 3000 light years from the crew. Unfortunately, he falls foul of Babyan the Butcher (Colin Baker) - the Federation's second most wanted man next to Blake. In 'Children of Auron', Cally is telepathically summoned to help her people, but is in fact walking into a trap set by Servalan. 'Rumours of Death' sees Avon seeking revenge on Bartholomew - the man who killed his one true love, Anna Grant. In 'Sarcophagus', Cally is taken over by a strange alien. 'Ultraworld' sees Dayna and Tarrant racing to save Cally and Avon's minds from the inhabitants of a gigantic computer planet. In 'Moloch', the crew follow Servalan to the planet Sardos, where they encounter the planet's supreme power - a computer creature from the future. 'Deathwatch' sees the crew discover a gladiator style spectator sport where one of the competitors is Tarrant's brother and the 'impartial' judge is Servalan. Finally, in 'Terminal', Avon receives some instructions to travel to the planet Terminal, and he believes them to be from the long-missing Blake. They are actually from the evil Servalan.

The Doctor (Tom Baker) and Sarah Jane return for a visit to Earth, only to discover that a wave of evil Mandragora energy has hitched a ride on the TARDIS and is now being used to plunge mankind back into the dark age. They have to thwart not only the murderous count, but also prevent the mad monk Heironymous and the Cult of Demnos from unleashing the Mandragora Helix on mankind.

The entire second season of the 1970s BBC sci-fi series. 'Redemption' sees Orac's prediction of the Liberator's destruction looking likely to be fulfilled when the ship's original owners arrive and take the rebels prisoner. In 'Shadow', Blake becomes involved with an interplanetary crime syndicate. 'Weapon' sees Blake and crew set out to steal a deadly 'delayed-effect' gun, which Servalan also wishes to possess. In 'Horizon', the Liberator heads for the edge of the Galaxy, only to be taken prisoner on the planet Horizon. 'Pressure Point' sees Blake attempting to destroy the Federation's control centre, only to walk into a trap set by Travis. In 'Trial', Travis is made a scapegoat by Servalan for their failure to capture Blake. 'Killer' sees Blake and his crew stumbling upon a derelict spaceship whilst on a mission to crack the Federation's new transmission code. The craft houses a deadly plague which could threaten the existence of the entire universe. In 'Hostage', Travis tries to trap Blake by kidnapping his cousin, Inga. 'Countdown' sees Blake and crew coming to the aid of the planet Albian, whose population are dying from radiation poisoning. In 'Voice from the Past', a telepathic signal forces Blake to reroute the Liberator to an asteroid where Travis lies in wait. Whilst 'Gambit' sees Blake, Cally and Jenna visit a gambling world to find the man who knows the location of the Federation's Star One. Avon and Villa, meanwhile, choose to take Orac on an illicit gambling spree. In 'The Keeper', Blake tries to obtain the key to Star One from a tribal chief on the planet Goth. However, Travis has beaten him to it. Finally, 'Star One' sees Blake at last launch his attack on the Federation's headquarters, unaware that an alien fleet is poised to invade.

Sylvester McCoy makes his first appearance as the venerable Doctor, coming up against his old enemy, renegade Time Lord Rani (Kate O'Mara). She forces the Tardis to crash land on Lakertya, and then masquerades as his assistant Melanie (Bonnie Langford), tricking the newly regenerated Doctor into constructing a giant time manipulator designed to drain the minds of history's greatest scientists.

The entire fourth, and final, season (remastered) of the 1970s BBC sci-fi series created by Terry Nation. 'Rescue' sees the crew rescued from the planet Terminal by a mysterious stranger, whose plan is later revealed when they arrive on Xenon. In 'Power', the crew struggle to get to the spaceship Scorpio, and are joined by Soolin. 'Traitor' sees Avon making the discovery that Servalan is still alive, and using a pacifying drug to subdue the planet Helotrix. In 'Stardrive', the crew need to replace Scorpio's main drives, necessitating a visit to the lair of the Space Rats. 'Animals' sees Dayna captured by Servalan while attempting to attract new recruits to the fight against the Federation. In 'Headhunter', Avon sets out to recruit a cybernetics genius, but ends up with a crazed killer android. 'Assassin' sees the crew under threat from an assassin called Cancer, and nobody knows what he looks like. In 'Games', the crew of Scorpio must play a series of deadly games to obtain a rare energy crystal. 'Sand' sees Tarrant stranded with Servalan on a remote planet. Romance is soon in the air, but so is deadly killer sand. In 'Gold', the Scorpio crew fall into a trap set by Servalan when they attempt to steal a valuable cargo. 'Orbit' sees a Federation scientist offer Avon the ultimate weapon, in return for Orac. In 'Warlord', Avon attempts to establish an anti-Federation alliance, but can he rely on the man he has chosen as a figurehead, warlord Zukan? And finally, 'Blake' sees Avon forced to seek a new leader for the floundering alliance. There is only one man for the job, of course: Roj Blake, now working as a bounty hunter on the planet Gauda Prime.