When her marriage begins to suffer after her husband loses his job and turns to alcohol, vacationing housewife Grace Needham has a one-night stand with the mysterious Julian Grant. When she returns home, she discovers that her husband has been employed by Julian, whose attention towards her has turned obsessive.

On the last working day of Sheriff Wayne, his small town is attacked by blood thirsty ravens that eat human flesh. Meanwhile his wife Cynthia visits a farm where a Mennonite family lives to say farewell to her friend Gretchen and discloses a dark secret about the origin of the fierce ravens.