Flight 23 has crashed in the Bermuda Triangle after a hijacking gone wrong. Now the surviving passengers must brave panic, slow leaks, oxygen depletion, and more while attempting a daring plan, all while 200 feet underwater.

An airport manager tries to keep his terminals open during a snowstorm, while a suicide bomber plots to blow up a Boeing 707 airliner in flight.

When an in-flight collision incapacitates the pilots of an airplane bound for Los Angeles, stewardess Nancy Pryor is forced to take over the controls. From the ground, her boyfriend Alan Murdock, a retired test pilot, tries to talk her through piloting and landing the 747 aircraft. Worse yet, the anxious passengers — among which are a noisy nun and a cranky man — are aggravating the already tense atmosphere.

Aviation disaster-prone Joe Patroni must contend with nuclear missiles, the French Air Force and the threat of the plane splitting in two over the Alps.