Jealousies mount between David and Mark over vulnerable Lunch Box waitress Stacy, whom David asks to pose for a wall mural in the diner; Jackie complains to Fred that their lovemaking needs a shot in the arm, even though he likes it just the way it is.
The show portrayed a working-class family struggling to get by on a limited income in the fictional town of Lanford, Illinois. Many critics considered the show notable as one of the first sitcoms to portray an American family in which economics necessitated two parents working jobs outside the home.