Fran, fresh out of her job as a bridal consultant in her boyfriend’s shop, first appears on the doorstep of Broadway producer Maxwell Sheffield peddling cosmetics, and quickly stumbled upon the opportunity to become The Nanny for his three children. But soon Fran, with her offbeat nurturing and no-nonsense honesty, touches Maxwell as well as the kids.

Martha Horgan is a withdrawn, mentally disabled woman who lives with her aunt, Frances. One of Martha's unusual traits is that she doesn't lie, a quality that leads to her getting fired from a dry-cleaning shop thanks to the actions of the shifty Getso. Conflict seems to follow Martha, since she also becomes romantically involved with local fix-it man, Mackey, who is sleeping with Frances as well.