Ventress is concerned about an old flame when her failing marriage looks set to end in tragedy, and Vernon aims to add glamour to the village by organising a Miss Aidensfield competition.
The Cybermen are released from their silos and on the march, wiping out Briggs's crew and ensuring that the freighter remains on course for Earth. But why...
The Doctor realizes the freighter is now a huge bomb and manages to send it back through time, where it can explode millions of years ago...but with one passenger still aboard....
With her crew slowly vanishing mysteriously, Captain Briggs assumes the Doctor to be the guilty party, but the traitor is closer to home… as are the Cybermen.