There is a blue door that appears in the city that not everyone can see. The Syndicate offices are on the other side, headquarters for everyone trying to keep magic hidden by any means necessary.
They also handle all the paperwork involved in processing dangerous old gods, deal with victims of the vampire flu and are always on the lookout for new employees to replace those lost due to other workplace hazards.
Office tells the stories of those who work for the mysterious Syndicate. It is a day job unlike any other, though some would probably prefer something a little more mundane.