King Thoughtless leads his kingdom into decline, caring for nothing but entertainment and an easy life. Everyone suffers and seeks only their own interests, disregarding the common good. The Prince, the Prudent, with the help of his little sister, Peaceful, and two women, Knowledge and Prudence, strives for the rebirth of his country. The basic ingredients for the recipe to succeed are diligence and progress, honesty and virtue, offering and sacrifice, patience and wisdom, justice and the prevalence of truth. Armed with courage and will, he struggles to breathe new life into the lost vision of the kingdom and restore prosperity to his country. An allegorical tale that, 100 years after its publication, still conveys timely messages today. "A fairy tale for children, but also a story for adults, a plastic protest against an excessive social evil, a satire and a farce, a caricature and a lesson, a book and an act... a moral drink offered in a fine art glass. A patriotic lesson in illustrations." (Kostis Palamas) The book is accompanied by an Appendix with the necessary material for the educational utilization of the work according to the teaching purposes set by the New Curriculum for the teaching of Literature in Compulsory Education - Historical context-era - Pragmatic comments, cultural elements - Ideological axes - Character sketching - Topics for discussion - Suggestions for interdisciplinary assignments - project plans. Also, the appendix provides a detailed Chronology of the life and work of Penelope Delta.