Stephen, a writer, escapes from the city with his wife Mia to write his new novel: A book about occultism. While doing research he comes across an incantation. As he writes it down, his wife starts to feel strange. By and by he realizes, that Mia seems to be possessed by a demon. At first the demon is simply playing games with Stephen, but when the demon commands Stephen to release him, Stephen has to make a tough decision: to either obey the demon and potentially save Mia, or to fight back against the demon and avoid further consequences.