Jak and Bil invite Dinara to visit the Netherlands. Surprisingly, their visit to the museums is cut short by strange phenomena. Then, while wandering on the canals of Amsterdam, and when passing under a bridge, an envelope falls on their boat. Its content reveals secret information about windmills in the country. Before they even take interest, trouble begins. What did they do? What nightmarish plan will they discover when visiting De Nachtegaal windmill? They get drawn into a thrilling adven...

Jak is a globe-trotting photographer. He always travels with his friend Bil, a bird who, surprisingly, can talk. After the adventures of Kazakhstan and Gabon, Jak and Bil decide to take a well-deserved vacation in Scotland, in an old castle on the edge of Loch Ness. The stay goes well until their nights are interrupted by a ghost who involves them not only in a new adventure but also in an ecological project of a pernicious objective… Will Jak and Bil succeed in stopping a European-scale bl...