Set in the northwest section of Baltimore, Maryland during the last week of 1959, ''Diner'' tells the story of a circle of male friends, now in their early twenties, who reunite for the wedding of one of their group. The title refers to their late-night hangout, the Hilltop Diner, located at Reisterstown Road and Rogers Avenue, Baltimore. However, the Hilltop had been converted into a liquor store so the location in the film is in the Canton section of Baltimore. An element of the story includes the Baltimore Colts winning the 1958 NFL Championship Game.