简介：TheTARDISarrivesonAndrozaniMinor,thesourceofalife-prolongingdrugrefinedfromasubstancecalledspectrox.ProductionofthedrugiscontrolledbySharazJek,afaciallydeformedmadmaninselfimposedexile,whoblamesMorgus,apowerfulindustrialistonAndrozaniMajor,forallhismisfortunes. Jekisfightinggovernmenttroopssenttoliberatethedrug.Hisweaponryisbeingsuppliedbygun-runnerssecretlyemployedbyMorgus,whoreceivespaymentfromJekinrefinedspectrox.ThisgivesMorgusamonopolyofthedrugonMajor. JekbecomesinfatuatedwithPeri,andsavesherandtheDoctorfrombeingexecutedonMorgus'sordersbygovernmenttroopsledbyGeneralChellak.Thetwotravellersescapeafterlearningthattheyhavecontractedspectroxtoxaemia,afatalconditiontowhichthereisonlyoneantidote-themilkfromaqueenbat,whichtheDoctormustobtainfromthedeepcavesonMinor.Morgus,seeinghispowerbaseslippingaway,travelstoMinor. Inaclimacticbattle,Morgus,Jekandallthesoldiersarekilled.Withmomentstospare,theDoctorcarriesPeribacktotheTARDIS,wherehegivesherallthemilkthathehasmanagedtocollect.Sherecovers,buttheDoctorhastoregeneratetosavehisownlife.…