Fatima and the clementine thieves

Fatima loves helping her grandfather in the clementine orchard. When it is time to rest and enjoy the sweet clementines, Fatima shares with her friends the spiders. They help protect the orchard from the tree-eating bugs. And now it is time for the harvest - the sweetest and best clementines will be sent to market so that the family can buy fish and pistachios and olives. But when Fatima goes to her grandfather to help him with the harvest he is heartbroken. The orchard has been ransacked and is full of newly broken trees, crushed branches and trampled fruit. What is destroying the orchard?