Shown the archive by the biomechanoid, the Doctor discovers that Kane is from the dead world of Proamon. Mel witnesess the destruction of the Nosferatu and Ace faces temptation.

The Doctor and Glitz meet the infamous dragon, which is really a biomechanoid. Meanwhile Kane turns on his allies, as he cannot trust anyone in his search for the dragonfire...

On Iceworld, the Doctor and Mel meet Ace, who has found herself there after a timestorm. While Ace nearly joins Kane's mercenaries, the Doctor and Glitz explore the ice caverns.

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...

Gavrok and the Bannermen have arrived on Earth, searching for Delta. They slaughter the holidaymakers without compunction to draw her out.

The Doctor and Mel win a trip to Disneyland in 1959 but after an accident in space, they end up in South Wales instead, along with an assassin and his intended victim...

The Great Architect in his new human body sets out to eliminate all the remaining humans in the Towers. The Doctor has to work with both the Red and Blue Kangs to come up with a plan that will stop his plans in their tracks. Pex has a serious decision to make.

Mel, after having met some very strange ladys, has to work to escape their clutches. Meanwhile the Doctor leans more information about the Great Architect.

The Doctor meets with the Red Kangs again and asks them why no one questions all the strange deaths at Paradise Towers.

The Doctor lands the Tardis at a fancy hotel called Paradise Towers where Mel is looking forward to having a good time. When they arrive, things are not quite what they were expecting. Right after landing, the Doctor and Mel meet the Red Kangs and find out about their opponents, the Blue Kangs.

The Doctor gradually starts recovering from his regeneration and begins to piece together the Rani' plan after finding the real Melanie. He then discovers that the Rani has taken the greatest minds in history and brought them all together to complete the mathematical calculations related to her nefarious plan to take over the universe.

The Doctor discovers how the Rani is getting the planets residents to cooperate with her. He then trys to trade a part that the Rani needs for Mel.

Mel searches for the Doctor and runs into a indigenous life form and has to explain that she is looking for The Doctor who may be able to help his people, meanwhile the Rani works to keep the Doctor convinced that she is Mel so he will help her with her plans.

The Doctor wakes after regeneration with memory problems, he is helped by Mel who is telling him about his important project that he has been working on but does not remember. Meanwhile, another Mel is assisting one of the inhabitants of the planet after he mistakes her for one of the Rani's assistants.