Investigative journalist Jeff Sefton has learned to laugh off his younger brother Nate's relentless string of obsessions, especially his latest rant that a hit TV show intends to harm him. However, when his brother mysteriously disappears, Jeff takes Nate's paranoia seriously, and in the process uncovers the dark underworld of the TV series "Cult" and its rabid fans, who are obsessed with the show's charismatic cult leader, Billy Grimm. As the show's gruesome plot twists begin to play out in the real world, Jeff enlists the help of a young research assistant Skye in a race to save Nate and unravel the mystery behind the TV series whose hardcore fans would literally kill to see what happens next...