Treasure from Heaven(1999)

Original title: Der Schatz, der vom Himmel fiel

Flori and Lucy are on holiday in Turkey. By accident they meet their class mate Ali, who is visiting his grandfather. Ahmet, a genie, sends the three kids on a treasure hunt near an old castle. They find real jewels and the hunt turns into a real adventure when it becomes apparent that a German gangster duo is looking for the treasure as well.