Two strangers meet
at an airport when they learn that their mutual flight has been cancelled. With
Alex (Winslet) due to marry the next day, and Ben (Elba), a neurosurgeon, due
to operate at the same time, they decide to hire out a private plane to get
them home in time. But when the pilot experiences a stroke mid-flight, their
plane crashes into the mountains, killing the pilot and leaving both Alex and
Ben injured and alone on the snowy peaks, with nothing but each other – and the
pilot’s nameless dog - to survive the elements.