In the aftermath of the shocking events in Sinister, a protective young mother (Shannyn Sossamon) and her 9 year-old twin sons (Dartanian and Robert Daniel Sloan) move into a rural house in which Bughuul is residing. He tries to convince one of the children to kill his whole family and film the murders. Meanwhile, Deputy So & So (James Ransone) investigates the murders himself, in an attempt to stop more of these killings from happening.