A group of teens on a boat find themselves in a fogbound night only to run aground on the rocks of the mysterious 'Dog Island' right before their boat goes up in flames.  As they gather on the shoreline, one of them goes missing, another is critically injured and four go searching for shelter.  They discover a lone standing house in the middle of nowhere and decide to venture inside when no occupant answers.  The teens soon ascertain that they are in more danger than they ever imagined and any hope of a timely rescue is unlikely.  Things go from bad to worse when the teens finally realize there's something else out on the island growling in the dark, and it ain't no dog!  And it's HUNGRY!