In 1966, in the Australian suburb of Westall, hundreds of students, teachers and local residents witnessed a UFO hover overhead for several minutes, land and take off again at incredible speed. Silenced by authorities at the time, and still angry about not being believed, they revisit the event as tenacious amateur sleuth Shane Ryan goes back to find an answer to the mystery. With an undercurrent of Cold War paranoia, and a burgeoning military alliance between Australia and America, their story has a deep resonance in the current cover-ups and lies delivered by governments in the interests of national security.