Three prison stories, stitched into one film. The first contrasts a juvenile boot-camp program in the United States, where parents voluntarily send teenagers to a strict prison-style facility meant to shock them straight, with a senior citizens' prison where inmates grow old and sometimes die behind bars, tended by fellow prisoners acting as caregivers. A middle segment steps back to explain how modern prison systems are structured and what daily routines look like across different countries. The last and lightest segment visits an Italian prison bakery whose felon-bakers produce panettone considered among the country's best, an order the Pope reportedly places every year, and the film follows the men learning the trade and the discipline it takes to bake a cake good enough for papal approval. Interviews with inmates, guards, and program staff carry each segment, moving between grim institutional footage and the small, humanizing detail that a life sentence can still include kneading dough for Christmas.