Det Forsvundne Ravkammer Sub Indo

Niels and big sister Nanna have to move from their safe village in Northwest Jutland because the local school has to close. Niels gets on the trail of a missing treasure down in a forgotten German bunker from World War II, and together with friends Tania and Charly, big sister Nanna and her friends Louise and Johannes, they go deep into the treasure after the treasure. They hope if they find it to save the school. But the road is full of dangers, and perhaps the treasure has long since disappeared. However, they are not the only ones looking for the treasure, and the adventure becomes much more dangerous than they had thought …