Christmas and the gang returns to Leros. Since they discovered the Code of Leros, the children have lived through many adventures. They have grown and matured through them. Everything begins idyllically. Even the always lonely Antigone seems to find someone who suits her. The gang organizes a beautiful cruise around the nearby islands. But the enemy lurks and everything will take an unexpected turn. A sabotage. A shipwreck. Will they manage to cope with the elements of nature? Children and parents will experience the most difficult and dramatic moments of their lives. Has the time come for the end of the game?