The Beguiled

During the American Civil War in 1863, Amy, a 12-year-old student at the Miss Martha Farnsworth Seminary for Young Ladies in rural Mississippi, discovers a seriously wounded Union soldier, John McBurney. She brings him to the school's gated enclosure where the school headmistress, Martha Farnsworth, first insists on turning him over to Confederate troops, but then decides to restore him to health first. He is initially kept locked in the school's music room and kept under watch. Edwina, the schoolteacher who has had no experience with men, takes an immediate liking to John, as does Carol, a 17-year-old student who makes advances with an experienced air. Read more on Wikipedia.