V'zulanite - a man of good faith and virtue - and his wife, Katie - a demonic entity - are detectives living in the dark and rainy city of Lana's who track down malevolent spirits to purge them. During a morning of peace, the police called them to the station to investigate a demonic haunting. They meet a man named Richard and purge two demons that are aligned to, the family.  Now hunted by their inhuman leader, the pair must escape the city to start a new life. But no one escapes the city of Lana's, and the bosses unrelenting vengeance.