The Doctor works to help the injured colonist, Tegan discovers a file in a closed drawer called "Deaths Unaccountable". Meanwhile, Plantagenate works to convict the Doctor of being the source of the attacks on Frontios.

The Doctor tries to deal with the Tractator's cunning plan, despite Turlough's best intervention. They discover the splintered TARDIS in the tunnels beneath the planet's surface, but how will they put it together again?