Middle-class suburbanites Larry and Kitty grow bored with their lives and respective marriages. Although each always found the other's manner grating, they fall in love when thrown together--without their spouses--on vacation. On returning home they try to break things off, only to grow closer. A holiday together will finally settle whether they should end their marriages.

Carter meets Toni and impulsively marry him to find that they disagree on everything. They separate and seven years later on the eve before their divorce they meet again and spend the night together.