恐怖分子在飞机上安装了炸弹，乘客要想活命，飞机上就必须保持在空中飞行，因为当飞机跌至800英尺以下时，炸弹就会被引爆…

When terrorists plant a bomb on a commercial flight, the passengers aboard the plane must fight to keep the plane in the air and all the passengers alive: the bomb is rigged to detonate whenever the plane dips below 800 feet.