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 Dalek victory and the Thals plan an intervention of their own.
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.
Count Scarlioni reveals his true form as Scaroth, the last of the Jagaroth and uses his time machine to go back in time and rewrite history. The Doctor, Romana and Duggan take to the Tardis in a race against time to stop him.
The Doctor and Harry are taken to the Kaled bunker where Davros is preparing to demonstrate the Daleks, while Sarah is captured by the Thals and taken to their city as a slave worker.
Chellak and his men attack Jek's base. The Dr. crash-lands the ship, and must escape from his captors to find the antidote to the Spectrox poisoning and save Peri. He does so, but at a staggering cost.
Count Scarlioni has the Doctor, Romana and Duggan locked in his basement but the trio manage to escape and learn of the Count's experiments with time travel. Even more surprising are his multiple genuine copies of the Mona Lisa.
The Doctor and Harry head to the Kaled city to alert the authorities to Davros' plans while Sarah and Sevrin are forced to work on the completion of the Thals' rocket.