The story is that a man who has sexually assaulted little girls comes out of prison after years. He gets a job in a lumberyard and has an affair with a woman (Kyra Sedgewick) who works there, and although he's tempted, he appears to holding on. Then a crisis happens and his world falls apart.
What the movie really is, though, is a character study of Walter. A heart-rending harrowing character study.