The city of Hockenheim is rich and glorious, but not everything in it is fine: no matter what year, visiting merchants disappear there. The knight of God Yaroslav Volkov went there on a mission - to get the missing papers - and almost paid with his own life, because he corroded the city from the inside with a filth that has many names, including self-interest, love of money, lust, lies, betrayal and black witchcraft.