Directed by Andrew Lau, the film is based on a real-life incident in May 2018, when the cockpit windshield of a Sichuan Airlines flight shattered while the plane was flying 30,000 feet above the Tibetan Plateau. The co-pilot was sucked halfway out of the cockpit and passengers started losing consciousness due to low pressure.
When the windshield of his commercial airplane shatters at 30,000 feet in the air, a pilot and his flight crew work to ensure the safety of the passengers and land the plane.