To defeat them, Kate plans to detonate a nuclear warhead in London from within UNIT's "TARDIS-proof" Black Archive of Time Lord and other artefacts in London which will wipe out London but save the rest of humanity.
Kate plans to detonate a nuclear warhead in London from within UNIT's "TARDIS-proof" Black Archive of Time Lord. This is to defeat them. Kate plans to detonate a nuclear warhead in London from other artefacts in London. This is to defeat them. These other artefacts in London will wipe out London. Kate save the rest of humanity. This is to defeat them.