In 1967, as the Vietnam War raged, a Vietnamese revolutionary guerrilla team became the U.S. military's top target—charged with safeguarding a secret group of intelligence agents at all costs.

Tử Chiến Trên Không follows Bình, an aviation security instructor on a flight to Ho Chi Minh City. Fifteen minutes after take-off, the flight descends into chaos when a ruthless group of hijackers led by Long seizes control. As the crew’s resistance only fuels the hijackers’ brutality, they unleash terror in an effort to break into the cockpit. Bình must rely on his intelligence and strength—alongside the courage of the passengers and crew—to fight back and bring the hijackers down.