Edward Carnby (Slater), detective of the paranormal, unexplained and supernatural, investigates the recent, mysterious death of a friend with clues leading to "Shadow Island," that brings him face to face with bizarre horrors that prove both psychologically disturbing and lethal, as he discovers that evil demons worshiped by an ancient culture called the Abskani are planning on coming back to life in the 21st century to once again take over the world.