In 1964, three teenage Irish girls are sent to a Magdalene asylum, an archaic home for "fallen women," though their crimes aren't criminal. Rose (Dorothy Duffy) is pregnant out of wedlock, Bernadette (Nora-Jane Noone) has been caught flirting with a boy at school, and Margaret (Anne-Marie Duff) is sentenced for having been raped by a family member. There, the girls perform hard labor supervised by cruel nuns, led by the sneering Sister Bridget (Geraldine McEwan) -- and dream of escape.