Kath and her 23 year-old granddaughter Nicol from Bolton are treated to an all-expenses-paid holiday in the Sahara Desert in Tunisia while money experts, husband-and-wife Ken and Mary, replace their exotic holiday with a week in a yurt in Cornwall. Nicol encourages her Nana to make lasting memories on their adventure while they can and Ken and Mary struggle with a severely restricted budget, testing if they really can practice what they preach