An oil refinery explodes in a small Alaskan town triggering a massive avalanche killing a group of skiers. Now, three years later, the refinery has been reconstructed with the addition of a new pipeline. Dr. Lia Freeman, an environmental inspector and sole survivor of the avalanche, is sent to give final approval to the project. Through the course of her inspections, she becomes convinced that the avalanche risk is now greater than before. After sounding the alarm with nothing happening, Dr. Freeman is labeled an alarmist. Now with the help of a local pilot, she must act to stop an impending avalanche that threatens to destroy the entire town.