The video 'History of Valentine's Day for Kids' explores the mysterious origins of Valentine's Day. School-aged viewers learn about figures like a priest from third-century Rome, who defied Emperor Claudius II by performing secret marriages, and the potential ties to Saint Valentine of Terni. Poet Geoffrey Chaucer's influence in establishing Valentine's Day as a romantic holiday is highlighted, marking it as a tradition in English literature. The video also covers the cultural evolution of Valentine's greetings from handwritten notes to mass-produced cards by the mid-19th century, a movement championed by Esther Howland, dubbed the 'mother of the American Valentine.' Additional insights include the introduction of heart-shaped chocolates and conversation hearts in the 19th century by Cadbury. This educational content effectively introduces historical figures and events, enhancing a young audience's understanding of cultural and historical developments.