Michael Portillo continues his journey from the northern state of Minnesota to the Deep South.Michael reaches Tomah, Wisconsin, where he helps harvest cranberries, an important crop for the US.Boarding the Empire Builder rail service once again, he travels to Wisconsin Dells, where an innovative photographer first captured motion.Michael takes a plunge in the waterpark capital of the world and finds a pleasant surprise in Baraboo - the circus is in town and it travels by train. Guided by a former clown and ringmaster, Michael explores the train's spectacular wagons.