▁attempt ▁to ▁st all ▁the ▁explos ions , ▁but ▁are ▁unable ▁to ▁do ▁so , ▁and ▁the ▁planet ▁sh ifts ▁out ▁of ▁orbit . ▁ ▁By ▁this ▁point , ▁R ana ▁and ▁the ▁others ▁have ▁arrived ▁by ▁the ▁T ARD IS ▁and ▁shock ed ▁by ▁the ▁dev ast ation ▁that ▁has ▁killed ▁many ▁thousands ▁already . ▁Sil ▁shows ▁his ▁true ▁colors ▁as ▁he ▁had ▁worked ▁to ▁help ▁bring ▁the ▁Ice ▁War riors ▁the ▁needed ▁explos ives , ▁but ▁when ▁he ▁is ▁ref uted ▁by ▁the ▁Ice ▁War riors ' ▁Grand ▁Marshall , ▁he ▁re - align s ▁with ▁the ▁Doctor ▁to ▁help ▁Magn us . ▁They ▁are ▁able ▁to ▁set ▁off ▁a ▁backup ▁set ▁of ▁explos ives ▁at ▁the ▁right ▁point ▁to ▁return ▁Magn us ▁to ▁its ▁original ▁orbit ; ▁the ▁Ice ▁War riors , ▁un prep ared ▁for ▁this , ▁are ▁caught ▁in ▁the ▁higher ▁temper atures ▁and ▁die . ▁The ▁virus ▁in ▁the ▁atmosphere ▁is ▁found ▁to ▁have ▁died ▁out ▁as ▁a ▁result ▁of ▁the ▁orbit - sh ifting , ▁and ▁the ▁group ▁of ▁Salv ak ians ▁offer ▁their ▁planet ' s ▁a ide ▁to ▁help ▁re build ▁Magn us ▁and ▁show ▁them ▁what ▁it ▁is ▁like ▁to ▁be ▁a ▁gender - bal anced ▁society ▁again ; ▁Sil ▁sees ▁the ▁business ▁opportunity ▁in ▁this ▁and ▁plans ▁to ▁stay ▁to ▁help ▁as ▁well . ▁The ▁Doctor ▁and ▁Per i ▁leave ▁just ▁as ▁An zor ▁is ▁able ▁to ▁make ▁his ▁way ▁back , ▁curs ing ▁the ▁Doctor ' s ▁name . ▁ ▁Background