The children's series "Rennschwein Rudi Rüssel" is based on the book of the same name by Uwe Timm. For ten-year-old Fritz (Jasper Smets), the move to the countryside is anything but welcome. His father Daniel Fröhlich (Martin Lindow) and he now live with Grandma Betty (Regine Vergeen) and Grandpa Oskar (Peter Franke). As Fritz explores the village, he finds a free-range piglet that is almost run over by a car. He rescues it, and a great friendship begins. And Rudi, the piglet's name, is the offspring of the best racing pig ever.