The Class of 2001 is gathering to celebrate the 20th anniversary of finishing school at the mansion of a wealthy classmate. The party is gaining momentum; someone with a smirk recalls the school days, another is resentful, and the overnight guests wake up to find the host's lifeless body with a gunshot wound. The phones are dead, the modem is submerged in the sink, and because of the recent snowstorm reaching the nearest settlement seems difficult. Not finding any traces around the house, the friends conclude that the killer is one of them.