The Tardis materializes aboard a mining ship on a desert planet, inhabited by a human crew and their robot servants. While Leela adjusts to life travelling with the Doctor, one of the ship's robots mysteriously kills a member of the crew.
The TARDIS materialize aboard a sandminer, a mining ship on a desert planet run by a robot labor force headed by a fairly small but sniping human crew. As one crewman is discovered strangled to death, the Doctor and Leela arrive just in time to become the prime suspects.—statmanjeff