In 1981, new pledges are welcomed to a sorority and the Sleeper clandestinely spies on the girls - prompting to kill them at their most vulnerable.In 1981, new pledges are welcomed to a sorority and the Sleeper clandestinely spies on the girls - prompting to kill them at their most vulnerable.In 1981, new pledges are welcomed to a sorority and the Sleeper clandestinely spies on the girls - prompting to kill them at their most vulnerable.