Antiques experts travel across the country, competing to make a profit at auction. Cheshire is the next stop for Christina Trevanion and Mark Stacey. Christina ends up deep underground, and Mark finds himself in such a predicament that he has to call for help. Mark takes aim on beating Christina with a Home Guard practice rifle but takes a break from shopping to find out about the pivotal role Macclesfield played in global silk production. Meanwhile, Christina makes a most peculiar purchase of a human jaw.