On a Friday afternoon, there was an unexpected knock on the door of the staff room of a city high school. An ambitious father is willing to go to extremes to get his son admitted to high school. The six teachers who are still at school so shortly before the start of the weekend now have to find out the hard way. After some unexpected twists and embarrassing revelations, true abysses open up for everyone involved...

Although he already has searched Iraq unsuccessfully for weapons of mass destruction as a member of a UN mission, German bio-weapons expert Arndt Wolf is still obsessed with the idea that Saddam Hussein is hiding something. Nobody around him is interested in this topic any more. This changes abruptly when an Iraqi asylum seeker claims to have been involved in the manufacture of chemical weapons. The German Federal Intelligence Service summons Dr. Wolf to ascertain the legitimacy of the claims made by the informant, who has been given the code name “Curveball”.