 A staunch professional executive (William Devane) and his wife (Patty Duke) coerce their rebellious teens (Kaj-Erik Eriksen, Natasha Melnick) and their older sister (Elisabeth Rosen) to take a plane trip for a weekend in the mountains. The older sister does not make it to the plane in time and the family leaves without her. Their small private plane then develops trouble and crashes away from any people. This forces the group to band together to survive the wilderness conditions, including an avalanche.