On Sardinia's east coast, in villages tucked into steep mountain terrain, people live past 100 at rates almost unmatched anywhere else, and this film goes looking for why. Antonangelo, 91, still milks his flock of sheep each morning and turns the milk into cheese, insisting that work keeps him alive. Giuseppino, 100, walks the steep paths of Villagrande on foot every day and credits humor and a positive attitude rather than diet alone. Carolina, 91, points to something different: an intact family, with mothers growing old alongside their children rather than in care homes, and she still spends her days on traditional food preparation. Scientists interviewed weigh nutrition, the region's punishing hillside geography, and genetics, which one study suggests matters most in the first half of life, against the pull of family and social bonds. No single explanation wins. The film leaves Sardinia's so-called Blue Zone as a puzzle with several working pieces rather than one solved answer, illustrated through the daily routines of the people actually living it.