In the Arctic wilderness of Canada, a US military transport crashes in a lake. There are no survivors and no bodies are found. The authorities conclude the plane was empty, and as the cold winds of winter begin to blow, they abandon their investigation.
Alex Harvey knows that the plane wasn't empty. Knows, in fact, that the plane contained a deadly secret. Nobody believes him, but when the power goes down in the nearby town of Greyknife, it's left to Alex to not only warn them of the danger, but to save them from it too.