The Robshaws enter the 1940s and experience a decade overshadowed by war and entirely fuelled by rations. In their second world war of the experiment, the Robshaws get used to a diet of duty and determination. Gone are the treats of the 20s and 30s and the Edwardian excess is a distant memory. Now it is powdered egg, nettles on toast and imitation brawn at the dining room table, and they are even one family member down as Fred is evacuated to the countryside.