Desc: Aufforderung zum Tanz: Directed by Peter F. Bringmann. With Marius Müller-Westernhagen, Guido Gagliardi, Riad Gholmie, Elga Sorbas. Theo Gromberg is a bon vivant, apparently with built-in guarantee to failure. Faithful to his side is his friend Enno, an Italian guest workers. Both have a dream: to which they want to get into the trucking business its own trucks.