On Saint Patrick's day—a night of wild parties and drunken revelry—three unlikely friends band together to save a college town from a vicious horde of body-snatching aliens.
New Year's Eve 1999 finds college-bound Clark and Trevor concerned about the future of their friendship, and a request for Clark to be Trevor's wingman ensures things will never be the same again.
A sadistic killer sets his sights on a group of friends partying in an abandoned lake house, determined to make their murders his symphony.