Ben (Idris Elba) is a skilled surgeon who is trusted by patients and leaders. In his spare time, Ben likes to climb mountains, which is his only and most persistent hobby. One day, Ben took a plane to return to the city where he worked, and a large-scale operation was waiting for him. On the same flight with Ben was a reporter named Ashley (Kate Winslet), who couldn't wait to reach her destination because her long-awaited wedding would be held there the next day. The sudden snowstorm disrupted their plans, and the flight they were going to take was cancelled. Ben and Ashley, who had to return to the city on time anyway, decided to take a private plane, but the pilot died of a heart attack halfway through the flight, and the plane they were riding crashed in the deep mountains and forests.