Picking up after a millennium of badass battles between demons and a secret order of demon hunters, known as Nekromancers, the forces of evil have found a way to possess souls through social-media apps. With every Wi-Fi-connected soul on the planet at risk, a dwindling band of Nekromancers find themselves forced to put their faith in a hapless sanitation worker, Howie (Ben O’Toole). Howie unwittingly carries an ancestral power that may afford them the means to definitively force evil offline.