"Curveball" is a documentary film that explores the controversial story of Curveball, an Iraqi defector who provided false information about weapons of mass destruction in Iraq. His claims were used by the U.S. government to justify the 2003 invasion of Iraq, leading to significant political and military consequences. The film delves into the implications of misinformation in intelligence and the impact it had on global politics. It highlights the failures of the intelligence community and raises questions about accountability and the consequences of relying on unverified sources in critical decision-making processes.