In Greta, Parker Posey is a svelte New York book editor hired to give a lean look to a hot new writer's overblown prose, who then decides to trim her own life of marital fat. And in Paula, the most problematic of the triptych, a disturbed and unwilling young mother-to-be, played by Fairuza Balk, picks up a boy hitch-hiker and discovers that strangers don't always return a kindness.