You shouldn't expect much of this movie. Sinister 2 is trying to bring back the elements from the prequel, like the creepy tapes but the implementation didn't succeed. The whole story is weak, flimsy and recycled. The child actors were really bad and the adult actors didn't do well also. If you want you can watch it to complete the sinister series or to see more disturbing videotapes from Bughuul.
Following the events from the first film, a different family; a mother and her 2 sons move into a rural house that's marked for death. When the deputy from the first film learns that this family is next in line to fall to the demon Bhughul, he races before time to stop it and save them from the same fate.