INTENDING TO SHOW MARTHA JONES THE glittering spires of New New York, the Doctor takes his latest companion to New Earth, a planet that has become home to mankind five billion years in Martha’s future. But the TARDIS arrives 30 years after the Doctor’s previous visit and much has changed. They find themselves in the virtually deserted undercity slum of Pharmacytown, where stallholders sell mood-altering chemical patches to the few remaining residents.