Die Spur des Sternenprinzen (2003)

Translated from the Back of the Book:

Long ago the star princes served the Thearch and the people, the principles of the Stellars and honour. However, this time was many centuries ago. Still, legends tell of warriors and healers, singers and magicians who served once in this exclusive order, of their heroic deeds and the artefacts they left behind. More than one collector has tried in vain to recover these objects, and thus it is a pure coincidence that lets the heroes witness a merciless fight for one of the artefacts and sends them on an expedition. The Trail of the Star Prince (Spur des Sternenprinzen) leads the characters through towns, wilderness and ruins, and everywhere lurk dangers, competitors bet on their failure, and unexpected obstacles must be overcome - exactly the right job for intrepid and curious adventurers.