Friends on a camping trip discover that the town they're vacationing in is being plagued in an unusual fashion by parasitic aliens from outer space. Four childhood friends, Jonesy, Beaver, Pete and Henry all share a special secret. Each year, they take a trip into Maine woods. This year is different. A blizzard occurs, and they recover a man found wandering around. Unbeknownst to them,this wandering individual isn't the only being to be found. Now they must act fast to stop the outbreak developing and to prevent the world from its doom