Based on the true story of Mohamedou Ould Slahi, a Mauritanian man who was imprisoned for 14 years without charge or trial at the Guantanamo Bay detention camp. Slahi, played by Tahar Rahim, was subjected to various forms of torture and mistreatment by the US government. Despite the bleak circumstances, Slahi found hope when he was assigned a defense attorney, Nancy Hollander (played by Jodie Foster), and her colleague Terrence Duncan (played by Shailene Woodley). Together, they navigated through numerous obstacles to fight for Slahi's freedom and expose the truth. The film is based on Slahi's memoir, 'Guantánamo Diary,' and highlights the dark secrets and controversies surrounding the Guantanamo Bay detention camp.