Experienced road tripper Christina Trevanion and her new travelling companion Tim Medhurst continue round the south west of England. A classic car and a historic boat help them advance their adventure in antiques.Christina goes caving to uncover the little-known story of maturing cheddar cheese before setting her sights on a very old egg. Tim, meanwhile, has a lesson in firefighting. An emu, a kangaroo and a frog all head to Exeter to go under the gavel.Excitement around one lot leaves an expert with a very fat piggy and loads of cash to take on the next trip.