This programme looks at the origins, development and running of the London Underground "Tube" system. To celebrate the 150th anniversary of The Tube, London Underground are organising for an old Metropolitan steam loco to haul trains along the first section of line to open, the Metropolitan Railway from Paddington to Farringdon, and at Farringdon they are preparing for a royal visit by Prince Charles and Camilla.
Life for former United Nations investigator Gerry Lane and his family seems content. Suddenly, the world is plagued by a mysterious infection turning whole human populations into rampaging mindless zombies.
Iconoclastic, take-no-prisoners cop John McClane, finds himself for the first time on foreign soil after traveling to Moscow to help his wayward son Jack - unaware that Jack is really a highly-trained CIA operative out to stop a nuclear weapons heist.