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.

Two old friends living in a dystopic future become trapped in a mysterious time loop — one that may have something to do with an ongoing battle between an omnipotent corporation and a ragtag band of rebels.