This Doctor Who novel by Terrance Dicks, titled Warmonger, depicts a massive conflict involving the legendary renegade Time Lord known as the Doctor and his companion Peri. The narrative begins with Peri leading a resistance movement on the planet Sylvana before she is reunited with the Doctor, who has assumed the mantle of "Supremo," a galactic military leader. This alliance of various alien species, including Sontarans, Draconians, and Cybermen, is assembled to combat the rising threat of the villainous Morbius. Much of the action is centered on the Hospice of Karn, where medical experiments and political intrigues unfold under the watchful eyes of the Sisterhood of the Flame. Ultimately, the Doctor must navigate complex diplomatic tensions and brutal space battles to secure the galaxy's safety. The book serves as an epic exploration of the Doctor’s past and his unusual role as a commander of vast armies.