en Cuevana 3. Mauricio, a lifeguard on a Chilean beach, considers himself to be a model of efficiency and professionalism. His colleagues, however, think otherwise, and speculate on why he never goes into the water. Maite Alberdi's visually gorgeous feature documentary debut has the intensity of a short story; beginning as a quirky character study of lifeguards and beachgoers, it becomes something altogether darker and more shocking when events take a dramatic turn.