In the lobby of hotel 'Krønasår', sign up with the museum attendant at 8.20pm, begin 8.30pm.
The children set off with the professor and his scatterbrained assistant on behalf of the Adventure Club of Europe, in search of the legendary treasure of Bartholomeus van Robbemond. What starts as an innocent museum tour soon becomes a whirlwind expedition full of puzzles, mishaps, and astonishing discoveries. Only those who think for themselves, get stuck in and work together as a team will get closer to uncovering the secret.