A horrific murder upends the Chicago Prosecuting Attorney's' office when one of its own is suspected of the crime.

After a group of teens from a small Midwestern town begin to mysteriously disappear, the locals believe it is the work of an urban legend known as The Empty Man. As a retired cop investigates and struggles to make sense of the stories, he discovers a secretive group and their attempts to summon a horrific, mystical entity, and soon his life—and the lives of those close to him—are in grave danger.