The Conjuring 3 is based on the true story of the Arne and Cindy Perron family, who claimed to have been tormented by a malevolent entity in their farmhouse in Rhode Island. The movie follows Ed and Lorraine Warren as they help the Perron family deal with the supernatural occurrences in their home. However, the movie takes a dramatic turn when Ed and Lorraine are asked to investigate a murder case in which the accused claims that he was possessed by a demon at the time of the crime.