Passengers on a plane headed from the Midwest to the West Coast (Winnipeg to Vancouver in the original; Minneapolis to Seattle in the film) get quite ill after eating the chicken pot pie entree. Both pilots also eat the chicken. Passenger George Spencer, a man who has not flown since the Vietnam War (single-engine planes in the original, helicopter/war choppers in the film), is reluctantly pressed into flying the plane, where he makes an emergency landing.