Christina Trevanion and Will Kirk take their mobile auction and workshop to Northumberland. It may be England's least densely populated county, but it's got an awful lot of clutter - not least at the home of Mike and Carole, two retired schoolteachers who are desperate to downsize. But will they be able to let go of several treasured items and heirlooms? With a grandchild on the other side of the world, any money raised from the auction will fund a much-desired trip abroad to visit.While restoration expert Will gets to work on furniture in need of a makeover, Christina uncovers several possibly profitable items - some of them shiny, some of them surprising.A glorious sunny day sees the Travelling Auctioneers pitch up their mobile saleroom for a crowd in front of the Bowes Museum in Barnard Castle. Christina presides over an online bidding war for some rare wooden toys Will has repaired, but will they make enough to pay for the flights Mike and Carole are hoping for?