Flying a routine mail delivery in the Northern wilderness, bush pilot William Mackenzie witnesses mysterious lights flaring across the sky. Suddenly, his trusty DeHavilland Beaver loses power and crashes into the dense mountain forest below. Stranded far from the closest human habitation -- lost, wounded, alone, and with wolves circling -- Mackenzie will have to quickly master basic wilderness survival skills if he's to last long enough to understand what he just witnessed, and how his world has just changed. And that's only the beginning.