Antique rivals Mark Hill and Roo Irvine become fully-fledged besties while battling it out. On the penultimate leg of their road trip, they scour the shops of Northumberland in search of something special. True to form, Mark finds a rare piece of glass, leaving him quivering with excitement. The pair share their love of all things celestial with a spectacular stargazing experience. And at the saleroom, all hopes are pinned on a sparkling showdown. Will Roo cling on to her winning streak, or will Mark finally reach for the moon?