A group of boys and girls travels for vacation to Leros. There, the children will meet new friends and experience an exciting yet dangerous adventure, as they try to safeguard a document of unique significance for the island's history, facing a ruthless gang. A novel filled with summer, sea, jealousy, childhood romances, and... some adults who often behave like children. It also carries an important and timely social message, as one of the protagonists is young Elias, a refugee from Syria. Along with his family, he will encounter the harsh face of the times, but will also experience the warmth of solidarity and friendship