Anti-gravity has never quite left the fringe of respectable physics, but it has occasionally had real budgets behind it. This film traces BAE Systems' Project Greenglow, a British defense contractor's quiet foray into gravity-control research, alongside NASA's Breakthrough Propulsion Physics program, which spent government money testing whether spinning superconductors could shift local gravitational fields. Physicists and engineers who worked on or around these programs explain what was actually tested, what the claimed anomalies looked like in the lab, and why most of them evaporated under stricter scrutiny. The film also walks through the theoretical objections, from general relativity's treatment of gravity as geometry rather than a force to be blocked, to the quantum field manipulation schemes proposed as workarounds. It treats the subject as a real scientific controversy rather than settled fact or outright hoax, letting skeptics and true believers make their case in turn. The result is a survey of how close, or far, serious institutions have actually gotten to bending gravity for propulsion.