As
winter break begins, a group of sorority sisters, including Jess
(Olivia Hussey) and the often inebriated Barb (Margot Kidder), begin to
receive anonymous, lascivious phone calls. Initially, Barb eggs the
caller on, but stops when he responds threateningly. Soon, Barb's friend
Claire (Lynne Griffin) goes missing from the
sorority house, and a local adolescent girl is murdered, leading the
girls to suspect a serial killer is on the loose. But no one realizes
just how near the culprit is.