 Caitlin plans to fly home to attend her sister s wedding but her plane is hijacked and crashed into the sea and a ransom demand is issued to the airline. Meanwhile, String and Dom mount their own search and rescue plan while Caitlin and the airline owner, who s also aboard the plane, attempt to keep the passengers calm. Complicating rescue efforts, the terrorists are nearby and they attempt to shoot down anything that comes even remotely close to the downed plane.