A group of children spends their summer vacation in Aegina. There, they are visited by a family friend from France, who works as an assistant to a psychiatrist in Paris. Her mission is to discover some clues repeated by a German patient who suffers from amnesia after stepping on a mine in Aegina during World War II.
Scattered words that the children try to piece together to make sense. Until they visit the Chaldeos family in Vagia, in whose house Hans stayed during the war. There they learn that Hans has stolen gold coins from the family. Thus begins the search for a lost treasure, leading the children back to the days of the German occupation and an unforgettable adventure…
