The series has 39 episodes and a feature-length pilot. See more »
The series opened with a pilot movie called "Olli in der Unterwelt". Later it was shown as the first three episodes called "Vom Erdbeben verschluckt", "Der geheimnisvolle Alte" and "Unerwartete Hilfe". See more »
Geheim, oder was?
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This was a very good children's and youth series ...
This was a very good children's and youth series ... was one of my favorite shows! In my opinion very good, to give young people the joy of reflection. The stories were always told with love and level!
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