In 1956, Olivia and her twin sister are born to a nun in an old auto parts store turned convent in rural Mississippi. Little Olivia doesn't survive the day, but her spunky spirit hangs around and takes on the role of ethereal watchdog over her twin. When the Reverend Mother-and holy guilt-convince the nun's sister (a young pregnant newlywed) to secretly raise the baby as the twin of her own soon-to-be-born child, Olivia realizes the urgency of...