This is the story of three gentle persons: Paul Rivers an ailing mathematician lovelessly married to an English émigré, Christina Peck, an upper-middle-class suburban housewife, happily married and mother of two little girls, and Jack Jordan, an ex-convict who has found in his Christian faith the strength to raise a family. They will be brought together by a terrible accident that will change their lives. By the final frame, none of them will be the same as they will learn harsh truths about love, faith, courage, desire and guilt, and how chance can change our worlds irretrievably, forever.

Elliot, a successful gynecologist, works at the same practice as his identical twin, Beverly. Elliot is attracted to many of his patients and has affairs with them. When he inevitably loses interest, he will give the woman over to Beverly, the meeker of the two, without the woman knowing the difference. Beverly falls hard for one of the patients, Claire, but when she inadvertently deceives him, he slips into a state of madness.