Bill Binney spent decades at the National Security Agency building ThinThread, a surveillance program designed to track terrorist communications while automatically encrypting the data of innocent Americans to protect their privacy. The film follows Binney and fellow NSA veterans William Weiner, Kirk Wiebe, and Ed Loomis as they explain how ThinThread was shelved weeks before 9/11 in favor of a costlier, less protective program called Trailblazer, and how they came to believe the agency had the raw material to detect the plot in advance. Interviews with the whistleblowers, former officials, and journalist James Bamford lay out the bureaucratic turf fights and contracting decisions behind that choice, while later sections track the men's decision to speak publicly and the FBI raids that followed. The film argues that mass, indiscriminate data collection after 9/11 was not just a civil liberties problem but a less effective substitute for what Binney's team had already built. It plays out as a case study in how institutions can bury a working solution.