Mark and Sara are inseparable friends as teenagers growing up in the late 60's in Grosse Pointe, Michigan. When Mark's family moves to New Orleans in the early 70's, their relationship deepens with the letters they write to one another. Both realize, through their letters, that their unique friendship is that once in a lifetime love. When their letters confessing this love, however, are secretly taken by Mark's mother, both believe the other has rejected their love. Mark and Sara are devastated but manage to recover from this great loss as time goes by. Now in their forties, Mark and Sara live in separate cities and both are unhappily married to someone else. Sara struggles with the strain of living with her alcoholic husband, Chris. And Mark's wife, Laura, is a successful, ambitious psychiatrist, leaving Mark to take over the majority of the family responsibilities. After years of living a somewhat empty life, Mark discovers the once-hidden letters that draw him back again to Sara. Soon thereafter, Mark and Sara ignite the spirit of their youthful friendship and for the first time, they become aware of what is missing from their lives--a dream, a confidant, a friend. Thirty years have gone by and yet when they reconnect, it's as if they've never been apart.