Mia, a drug addict, is determined to kick the habit. To that end, she asks her brother, David, his girlfriend, Natalie and their friends Olivia and Eric to accompany her to their family's remote forest cabin to help her through withdrawal. Eric finds a mysterious Book of the Dead at the cabin and reads aloud from it, awakening an ancient demon. All hell breaks loose when the malevolent entity possesses Mia.

War journalist Paul Prior returns to his New Zealand hometown after his father’s death, rekindling strained relationships with his brother and memories of a troubled past. He befriends Celia, a curious and aspiring writer, who shares a fascination with his world. When Celia mysteriously disappears, Paul becomes the prime suspect, forcing him to confront buried secrets and uncover the dark truths of his family and community.

In a quiet corner of rural New Zealand, a teenage boy holds the key to the greatest discovery of our time. The world is tough for our young genius who's largely misunderstood by the people around him. What he doesn't realise is that by building The Machine, he's started a chain of events that could, if it works, change the course of history forever.