Lazarim’s shrovetide is one of the most genuine and ancient carnival celebrations in Portugal. O Diabo do Entrudo explores the fascinating caretos and their elaborate costumes, enabling not only an overview of the carnival celebrations, but also a reflexion on gender dynamics and on the continuation of ancient customs handed down between generations in an ancient Portuguese village. One highlights the way in which rituals and traditions remain alive and are passed on from generation to generation, providing an intimate and rich perspective on the social and cultural changes over time.