"First the Homeland and then the voice of the heart!" With this idea - pervasive in Delta's work - three Greek children, Konstantinos, Michael, and Alexia, come of age and mature at the beginning of the 2nd millennium AD, when the battles between the Byzantine Emperor Basil II the Bulgar Slayer and the Tsar of Bulgaria Samuel continue relentlessly with increasing ferocity. The three children, more valuable helpers than the best soldier, infiltrate the enemy camp as spies to warn in time of the enemy's movements. We watch with bated breath their difficult struggle to defend the homeland and their constant anxiety to prove worthy of their duty, sacrificing strong friendships and true loves. The fictional reconstruction of one of the most glorious eras of Byzantium, a deeply peace-loving book, a hymn to humanity, read again and again by young and old with the same enthusiasm no matter how many years pass. The book is accompanied by an Appendix with the necessary material for the educational utilization of the work according to the objectives set by the New Curriculum for the teaching of Literature in Primary and Secondary Education. Chronology of the Life and Work of Penelope Delta Educational material: - Historical context - Interpretation of difficult words and phrases - Factual elements - The characters - The characters - Questions - Activities.