Spring in a village of Giona. The group of children who discovered the Code of Leros is faced with a new, well-hidden secret: A city from the era of the Dorians, which some want to erase forever. The children will try to stop the destruction. In their effort, they will have the support of Nikos Papageorgiou, the policeman who seems to have stepped out of the pages of an old detective novel. The dangers they will face are literally deadly... The novel touches on important issues related to the protection of the environment and our cultural heritage, which are often sacrificed on the altar of temporary profit. The pages of the book are dominated by spring and Greek Easter with its traditions, solemnity, and joys. We will get to know nature and history, we will discover what the past hides. In this fairy-tale environment, first love will also blossom...