Obsessed with the idea that a treasure has been hidden in their old manor, Patrick
and Annie have only one goal: To find
the treasure of the pirate La Mouche. Does the treasure really exist?
Is it only a rumour? With the help of an eccentric
friend of their great uncle, the children discover that treasure can
be more than precious stones. Written in a rich language,
readers recognize that treasure can be something far more important:
their family heritage.