A young fast food restaurant worker finds herself the target of a malicious hoax caller in this thriller from director Craig Zobel. Sandra (Ann Dowd), the manager of a branch of 'Chickwich' in rural Ohio, receives a call purporting to be from a policeman, Officer Daniels (Pat Healy). Told that one of her staff members, 19-year-old Becky (Dreama Walker), has been reported for stealing money from a customer's purse, an eager to please Sandra locks Becky in her office. Over the coming hours, and despite protestations of her innocence, Becky is subjected to a range of increasingly humiliating episodes as Sandra, refusing to question authority, actions whatever the voice on the end the phone demands.