The Doctor, Harry and Lester try to destroy the Cybermen’s relay device, while the Vogans prepare to destroy Nerva even though Sarah Jane is still on board.

The orbit of Jupiter, the 25th century. Arriving back on the Nerva Beacon much earlier in history, the Doctor and his friends discover the satellite beset by space plague while…

The Doctor transmits Sarah Jane and Harry down to Voga to cure Sarah Jane of the Cybermat’s poison but Kellman’s sabotage means he is unable to bring them back.

Gharman tries to convince the Kaleds to vote against the Dalek project but Davros has a trick up his sleeve, while the Doctor works to destroy the tape recording of…

The Doctor fails to prevent the Thals from destroying the Kaled city but they don’t have long to enjoy their victory before the Daleks attack.

The Doctor is forced to give Davros full details of future Dalek victories but opposition to Davros’ plans is growing among the Kaleds and soon there is open rebellion.

The Doctor and Harry head to the Kaled city to alert the authorities to Davros’ plans while Sarah Jane and Sevrin are forced to work on the completion of the…

The Doctor tries to protect the humans still in cryogenic suspension from the Wirrn, who are determined to use Earth as their new breeding ground.

The Doctor and Harry are taken to the Kaled bunker where Davros is preparing to demonstrate the Daleks, while Sarah Jane is captured by the Thals and taken to their…

The Doctor learns that Styre has been experimenting on the Galsec crewmembers to pave the way for a Sontaran invasion of Earth and decides the only way to halt his…

The planet Skaro, the distant past. The Time Lords divert the Doctor, Sarah Jane and Harry to this war-torn world, and give the Doctor a mission: the evil of the…

The Doctor, Sarah Jane and Harry teleport to Earth to ensure the planet is safe for the survivors on board Nerva Beacon to return and reinhabit their world. A Sontaran…

UNIT attempt to get into the bunker to stop Miss Winters setting off the world’s nuclear missiles but first they have to get past the K1.

The Doctor and Harry revive the Ark’s medtech, Vira, to help Sarah Jane. But when station commander Noah is revived, he becomes suspicious of the newcomers.

Knowing that Noah has been infected by the Wirrn, the Doctor persuades Vira to halt the reviving of her people, knowing it will place them in danger as well.

The Doctor’s attempt to give Harry a trip in the TARDIS sees the two of them and Sarah Jane arriving onboard a space station in the far future, with some…

The Doctor changes form again. Before he has fully re-covered, something of colossal strength steals a secret weapon, and the convalescent Doctor starts to investigate.

The Doctor and Sarah Jane become convinced Think Tank are behind the electronic component thefts but are unable to stop them carrying out another raid.

Sarah Jane and Kettlewell infiltrate an SRS meeting to try and find out what Miss Winters is up to but there is a surprise in store.

K’Anpo persuades the Doctor he must face his fear and return the crystal to the Great One. But first they need to get past Barnes and his men.

Lupton forms an alliance with the spider to steal the Doctor’s blue crystal, while Sarah and Mike attempt to alert people to what they’ve seen.

Sarah is captured by the spiders’ guards while the Doctor tries to help Arak and the others strike back against the spiders.

The Doctor escapes from the spiders’ larder only to encounter the Great One, while Sarah makes a deal with the Queen Spider.

The Doctor and Sarah head to the meditation centre to try and get the crystal back while Lupton prepares to return it to Metebelis Three. But all their plans are…

The Ice Warriors take control of the planet and force the miners to return to work but Ettis takes the opportunity to try and destroy the citadel.

While the Doctor carries out an investigation into ESP, Mike Yates asks Sarah to look into some strange goings on at a meditation centre he’s attending.

The Doctor turns the Aggedor spirit against the Ice Warriors to aid the Peladonians in their battle but Eckersley attacks him with the security system.

Sarah and Alpha Centauri decide to try and alert the Federation to what the Ice Warriors are up to but first they have to escape from the throne room.

The Doctor and Bellal continue to penetrate the City’s defences while Sarah and Jill try to stop the Daleks leaving with the parrinium.

The planet Peladon, some time in the future. Mining disputes threaten the peace of the planet, and as the Doctor and Jo arrive, it seems that the ghost of Aggedor…

The Doctor and Sarah pacify Aggedor and the Doctor encourages the Queen to make peace with the miners, but Ortron soon has him under arrest again.

The Doctor is rescued by Gebek, prompting him to try and help the miners, but his advice results in Ettis launching another attack on the armoury.

The Doctor and Sarah meet up with Bellal, who helps them escape from the Daleks and explains the origin of the City.

The barren planet Exxilon, some time in the future. The TARDIS is forced down by a total power failure and the Doctor and Sarah meet a stranded Earth crew who…

The Doctor and the MSC crew join forces with the Daleks to mine the parrinium, only to come under attack from the Exxilons.

The Doctor is rescued from Finch by the Brigadier and Benton and tries to persuade them to stop Grover before millions of people are erased from history.

Sarah attempts to find a way off the spaceship while the Doctor tries to track down the source of the time displacements.

Yates sabotages the Doctor’s equipment to stop him finding the location of Whitaker’s base but then the tyrannosaur escapes, placing Sarah in danger.

The Doctor has been framed as the monster maker by Finch and is on the run from the army, while Sarah attempts to alert UNIT to what Grover is up…

The Doctor attempts to solve the mystery of the monster invasion. His first move – the capture of a dinosaur.