Jack Spratt is a policeman on the door of Number Ten. When the Prime Minister decides that the only way to get closer to the men and women on the street is to travel around the country incognito and find out what they really think, he enlists Jack's help. Leaving his high-powered, ambitious wife to hold the fort, he and Jack set out. But neither can foresee how their extraordinary odyssey will impact on world affairs. Or their own lives.