Curtis LaForche (Michael Shannon), is a working man in small-town Ohio with his beautiful wife Samantha (Jessica Chastain) and their young, hearing-impaired daughter Hannah (Tova Stewart). When Curtis' recurring dream of ominous storms becomes increasingly vivid, he fears for both his sanity and the safety of his family. Internalising his anxieties, his outward behaviour becomes progressively stranger to his wife and fellow workers, and then the hallucinations start to invade his waking life with terrifying consequences. Is Curtis experiencing deranged visions or premonitions?