One night in the early 1970s, Lucie, a little girl missing for over a year, is discovered wandering by the side of a country road, unable to say anything about what has happened to her. Hospitalized, Lucie slowly learns how to live again with the help of Anna, a victim of terrible abuse at the hands of her own family. In no time, they are inseparable. Fifteen years later, with the help of Anna, Lucie sets out to wreak vengeance on the family she believes to be responsible for her capture and torture. A visceral and deeply disturbing exploration of what it means to be pushed to the limits of human endurance, Martyrs redefines the nature of horror cinema.