Marcus Chlodwig is a young priest who has just been moved to a new church St Notburga that is set in this small, mysterious town where people are strange and silent. One evening, on the November 4th, he finds an curious old book in a church library about the Satan who lives inside this walls and who appears on the same night for over six decades now. Soon, Marcus finds himself trapped in St Notburga church and his only way to save himself is to stop the Satan.