A husband and wife, both of whom are career-oriented, agree never to step on the other's ambitions. Unfortunately, both become too ambitious for their own good, and, true to the film's title, their verbal "contract" is shattered.
Jo, the mother of seven children, divorces her second husband in order to marry Jake, a successful but promiscuous screenwriter. Though they are physically and emotionally compatible, they are slowly torn apart.
A retired boxer intends to return to the ring for one last shot at the title, but first he must make the weight. Holed up in a room in Las Vegas with an unscrupulous trainer, he embarks on an intensive and illegal weight-cutting program.