Passengers and crew on a flight are attacked by unseen forces that threaten all aboard.

When Rumpelstiltskin tries to take over Earth once and for all, The Avengers Grimm must track him down through time in order to defeat him.

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.

A group of scientists at a research facility based on Antarctica battle a breed of sharks that have invaded Antarctic waters.