Bonn depicts the rise of the young West Germany, a country struggling to break free from the terrors and legacies of World War II and longing for a 'normal' life. Into this heady and volatile mix steps Toni, a young woman determined to seize every opportunity, overcome every obstacle and make her own way in what is still a very male-dominated society. But what at first appears to be only an entry-level office job at one of the country's two competing secret services soon sucks her ever deeper into a clandestine world of suspicion
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”.