For the past ten years, we have shopped till they dropped. Now recession is threatening one of our favourite pastime, and one of its biggest industries. It is the latest blow for many of the beleaguered high streets over in the UK. Retail guru Mary Portas (HAH, you thought she was gone after that charity shop thing, didn'tcha?!) wants to discover why boom towns are becoming bust towns, and what can be done to stop the extraordinary number of shop closures around the country. Can her innovative sales techniques keep tills ringing and high streets alive? Mary takes on her biggest challenge to date (yet again): saving not just a single shop but the entire town centre of Tewkesbury, which is fighting the recession with true Blitz spirit.