How many movies have Doris Plenert and Ralf Huettner collaborated on?

They have worked on 2 movies together! Their first movie together was Die Musterknaben 2 (1999) while their highest rated movie together was Die Musterknaben 3 - 1000 und eine Nacht (2003). They have not worked together since Die Musterknaben 3 - 1000 und eine Nacht (2003).