Aroldo Maciel, an unassuming audio technician at a university in Cuiabá, Brazil, has devised an earthquake prediction method that has left scientists around the globe perplexed. Although he remains relatively unknown in his homeland, Maciel has achieved considerable fame in Chile and other earthquake-prone nations, where he can hardly walk the streets without being recognized. "Sísmico" delves into the significant earthquakes Maciel has predicted, explores his unique method, examines his clash with the scientific community, and sheds light on his connection with the people of Chile.