Julian Assange founded WikiLeaks to publish material governments and corporations wanted hidden, and Alex Gibney's film traces how that idea collided with the U.S. Army intelligence analyst who fed it the largest classified leak in American history. Chelsea Manning, then Bradley Manning, appears through instant-message logs with the hacker Adrian Lamo, who turned him in, laid out onscreen as text while Manning's own words describe downloading the Iraq War Logs, the Afghan War Diary, and the State Department cables now known as Cablegate. Gibney interviews WikiLeaks insiders, journalists who worked with Assange on the releases, and the soldiers who served alongside Manning, building two parallel case studies of what leaking costs the leaker. The 'Collateral Murder' gunship footage gets its own extended treatment as the release that made WikiLeaks famous. Assange's story runs alongside Manning's, from the site's early leaks through the Swedish sexual assault allegations and his retreat into the Ecuadorian embassy in London. The film keeps both men in frame without resolving whether either comes out a hero or a cautionary tale.