The collapse of the World Trade Center towers on September 11, 2001, gets a second look here from engineers and physicists who argue the official account does not add up. The film spends much of its runtime on WTC 7, a 47-story building that was never hit by a plane yet came down in 6.6 seconds, falling within 70 feet of its own footprint. Scientists interviewed point to symmetrical collapse patterns, free-fall acceleration, and reports of thermite residue in the dust as evidence pointing toward controlled demolition rather than fire and structural damage alone. Photographs, news footage from the day, and computer modeling are used to test whether the towers could have failed the way the 9/11 Commission Report describes. The film treats this as a civil engineering question first, building its case on measurements and physics rather than speculation about who might have been responsible, and argues that these specific findings were largely ignored by investigators and news coverage at the time.