The Kaled city is now ravaged, and life has become one of fear, protected by a vast transparent dome that covers the city ruins. The Thals undertake a desperate mission to take Davros away from his laboratories, and the Supremo must send a crack squad over enemy lines to retrieve his chief scientist. Led by the morally bankrupt Lieutenant Nyder, Davros is rescued. But he has been changed by the experience, and where once he stood for knowledge, he now espouses the utter extermination of the Thal people. To this end, Davros will stop at nothing to make sure his legacy lives on...