The alien world of Lakertya. With the aid of the savage Tetraps, the Rani has conquered this planet to allow her to continue her depraved biochemical experiments. But she finds herself needing the Doctor's assistance...

The Rani's impersonation of Mel backfires badly because Urak can't tell the difference, while the Doctor attempts to learn the secret of the Loyhargil.

The solstice nears, making it time for the Rani to bring her plans into fruition. The Doctor's sympathies for Beyus, ruler of the Lykertyans, are rather qualified. Beyus' heart is for his people yet something prompts him to collaborate fully in helping the Rani reach all her objectives. The answer, he's told, lies within the Center of Leisure.

The Rani, at last, links the Doctor into her great brain machine, the crowning jewel in her component packet of geniuses brought together to turn Lakertya itself into one vast cerebral mass capable of redirecting time anywhere in the universe, giving her absolute power over all creation.

The legendary Paradise Towers is supposed to be the height of luxury but when the Doctor and Mel arrive, they find it is as far from paradise as possible...

With the Doctor condemned to death by the caretakers and their bizarre rulebook, Mel faces cannibalistic OAPS. Is Pex going to be the true hero of Paradise Towers ?

Mel and Pex play cat and mouse with the lethal cleaner robots while the Doctor and the surviving Kangs learn all about Kroagnon the Great Architect.

Meeting up at the pool, the Doctor leads the surviving Rezzies, Kangs and Caretakers as they draw the line together on the 245th floor against the systematic cleansing of all life by Kroagnon and his robotic Cleaners.

Wales, 1959. A top-secret US satellite has mysteriously gone missing. This could have something to do with the arrival of a party of alien tourists en route to Disneyland, amongst their number Mel and the Doctor, and the Queen of the Chimerons - who's fleeing the Bannermen and their genocidal leader Gavrok...

Mel's just discovered something very interesting about the life cycle of her new friend and the Doctor has been cornered by an alien bounty hunter wearing blue suede shoes.

As Billy and Ray do what they can to help save Delta and the baby, the Doctor and Goronwy the beekeeper face Gavrok and his Bannermen one last time...

The deep-space trading post of Iceworld, the far future. The Doctor, Mel, their old friend Glitz and time-lost waitress Ace go in search of a fabulous treasure, supposedly guarded by a fire-breathing dragon. But what is the link between the treasure and Iceworld's proprietor, the frosty Mr Kane?

While Mel and Ace run from Glitz's former crewmen (whom he sold to Kane), officers Belazs and Kracauer conspire to overthrow Kane. The Doctor, meanwhile, discovers there really is a dragon in the ice caverns, which turns out to be a bio-mechanoid with a very interesting function.

At last learning the location of the missing key to his spaceship, Kane has the dragon hunted down and Iceworld brutally purged of all visitors; but, the Doctor, visiting the Ice Garden, learns something significant that will put the chagrin on Kane's grand plans for home world vengeance.

London, 1963. Returning to the scenes of his first televised adventure, the Doctor and new companion Ace play a tricky game of bluff and deceit involving two rival Dalek factions, local soldiers, and the awesomely powerful Gallifreyan artefact, the Hand of Omega...

With two factions of Daleks involved in a race war on Earth, the Doctor takes care of old business by having the Hand of Omega ceremoniously but quietly buried in a churchyard. His actions do not go unobserved, and leaving behind a bored Ace without a purposeful outlet could spell trouble as well.

The Doctor plans to let one of the Dalek factions have the Hand of Omega (but not too easily, of course) while keeping Gilmore and his military men preoccupied in a safe territory, but that plan could be threatened by a mole in their midst and a miscalculation on the Doctor's part.

The Omega device is in jeopardy. A giant Dalek warship hangs above the Earth. London has become a battleground for ruthless alien intelligences.

The Earth colony Terra Alpha, the future. With the aid of her sweet-natured executioner, Helen A, ruler of the planet, has ensured the population is happy - on pain of death! The Doctor and Ace decide to fight for the right to be miserable.

The Doctor and Earl manage to escape from the Kandy Man and join up with the planet's natives, the Pipe People, enlisting their help to rescue Ace.

As the Doctor leads the Pipe People towards reclaiming their world, Helen A faces betrayal from those closest to her.

The Doctor and Ace battle the time traveller Lady Peinforte and the Cybermen for possession of the incredibly powerful Nemesis statue, which is on its way back to the planet Earth to rendezvous with a destiny set in stone by the Doctor himself.

As hostilities break out between factions vying for ownership of the comet, the Doctor goes after the worst of the lot - Cybermen, using Ace's upgraded boom box to flood Cyber Communications with jazz music while trying to locate the whereabouts of the fleet beyond this mere scouting party.

With the Cyber Fleet poised nearby, the Doctor may have no choice but to let them have Nemesis. Meanwhile, Lady Peinforte and Richard navigate modern society, De Flores encounters an open betrayal, and Ace combats Cybermen with a slingshot.

The Doctor and Ace visit the Psychic Circus on the planet Segonax, where they find the standard of judging at the talent contest distressingly astringent.

The Doctor and Ace reach the Psychic Circus, where the Doctor is imprisoned with the other contestants while Ace draws the attention of the Chief Clown.

Mags helps the Doctor escape and Deadbeat leads him to Ace, where Bellboy tells them what happened to the Psychic Circus.

Mags goes to find Ace and Kingpin, pursued by the Chief Clown, while the Doctor confronts the power behind the Psychic Circus.

As UNIT are transporting a nuclear warhead around Carbury, knights in armour arrive to continue waging a war that began thousands of years ago, but in a wholly different dimension.

The Doctor and Ace discover a stone spaceship underneath Warmsley's archaeological dig while Mordred summons Morgaine to Earth's dimension.

The Brigadier rescues the Doctor from the stone spaceship before they set out to locate Morgaine before she gains Excalibur.

Morgaine forces Ace and Shou Yuing to hand over Excalibur by threatening to release the Destroyer, so the Doctor and the Brigadier enter a dimensional portal to stop her.

The Doctor and Ace explore Victorian house Gabriel Chase and realise it hides just as many dark secrets in its drawing room as it does in its dark cellar.

The Doctor manages to rescue Ace from the husks and then tries to uncover the truth about the goings on in Josiah's house.

Only Redvers, still searching for the elusive Saxe-Coburg, seems able to withstand Light and communicate with Control. Ace realises her past actions need to be dealt with.

England, the 1940s. The TARDIS brings the Doctor and Ace to a secret naval base during WWII. There, the time-travellers battle vampiric Haemovores and an ancient Viking curse!

The Doctor and Ace manage to convince Sorin to release them while Millington and Judson attempt to translate the Viking runes.

The Doctor and his friends come under attack from the Haemavores, allowing Millington to retrieve the flask containing Fenric's essence.

Fenric is loose and planning to use the Ancient Haemovore to poison the Earth with chemicals, unless the Doctor can defeat him in their centuries old game.

Perivale, England, the late 1980s. People are vanishing into thin air under the baleful stare of a very strange cat. The Doctor and Ace learn that, in the battle for survival, success can carry a terrible price...

The Doctor and Paterson manage to escape from the Master and join up with Ace and her friends, where the Doctor tries to find a way to get them all off the planet before it explodes.

Ace manages to transport the Doctor and the others back to Perivale but the Master is also there, preparing for a final showdown with the Doctor.

The Rani draws the Doctor's First and Second incarnations into a time tunnel and traps his other incarnations in a time loop in Albert Square, bouncing back and forth between 1973, 1993 and 2013.

The Rani plans to transfer her time tunnel to the centre of the Earth's time meridian, and use her store of genetic codes and brain prints of every living creature to control evolution itself.