It's 1964, St. Nicholas parish in the Bronx. A charismatic priest, Father Flynn, is trying to upend the schools' strict customs, which have long been fiercely guarded by Sister Aloysius Beauvier, the iron-gloved Principal who believes in the power of fear and discipline. Doubt centers around a battle of wills and fierce moral convictions when the nun confronts the priest after suspecting him of abusing a black student. He denies the charges, and much of the play's quick-fire dialogue tackles themes of religion, morality, and authority. Brilliant performances by Phillip Seymour Hoffman and Meryl Streep.