Company commander Claus Michael Pedersen and his men are stationed in Helmand, Afghanistan. Meanwhile back in Denmark, with a husband at war and three children missing their father, everyday life is a struggle for Claus' wife Maria. During a routine mission, the soldiers are caught in heavy Taliban crossfire. In order to save his men, Claus makes a decision that ultimately sees him return to Denmark accused of a war crime.

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”.

A chilling vision of the House of Saddam Hussein comes to life through the eyes of the man who was forced to become the double of Hussein's sadistic son.