▁duplicate . ▁ 2 0 ▁million ▁Z yg ons ▁have ▁been ▁res ett led ▁on ▁Earth , ▁peace fully ▁living ▁out ▁dis gu ised ▁as ▁humans . ▁The ▁Doctor ▁leaves ▁the ▁Os good s ▁the ▁Os good ▁Box ▁to ▁be ▁used ▁as ▁a ▁last ▁resort . ▁After ▁one ▁of ▁the ▁Os good s ▁was ▁killed , ▁the ▁other ▁left ▁UN IT ▁and ▁disappeared . ▁ ▁In ▁the ▁present , ▁Os good ▁is ▁captured ▁by ▁a ▁spl inter ▁group ▁of ▁Z yg ons ▁in ▁the ▁town ▁of ▁Tr uth ▁or ▁Con sequ ences , ▁New ▁Mexico ▁just ▁after ▁sending ▁a ▁warning ▁to ▁the ▁Tw elf th ▁Doctor ▁that ▁the ▁treat y ▁is ▁failing . ▁In ▁London , ▁the ▁spl inter ▁group , ▁which ▁see ks ▁to ▁be ▁themselves ▁no ▁matter ▁what , ▁kid n aps ▁and ▁k ills ▁Z ygon ▁High ▁Command , ▁leaving ▁a ▁Z ygon ▁called ▁Bon nie ▁in ▁charge . ▁In ▁Tur mez istan , ▁Os good ▁is ▁forced ▁to ▁read ▁a ▁video ▁message ▁declaring ▁the ▁spl inter ▁group ' s ▁intent ▁to ▁go ▁to ▁war . ▁At ▁the ▁block ▁of ▁fl ats ▁where ▁Clara ▁lives , ▁Clara ▁is ▁knock ed ▁un cons cious ▁and ▁hidden ▁in ▁a ▁pod ▁under ground . ▁Bon nie ▁takes ▁Clara ' s ▁place . ▁ ▁The ▁Doctor ▁travel s ▁to ▁Tur mez istan ▁via ▁the ▁aer op lane ▁afford ed ▁him ▁by ▁being ▁President ▁of ▁Earth ▁to ▁rescue ▁Os good . ▁The ▁Doctor ▁and ▁UN IT ▁troops ▁conver ge ▁on ▁the ▁church ▁Os good ▁is