Alice, the only relatively normal member of the eccentric Sycamore family, falls in love with Tony Kirby, but his wealthy banker father and snobbish mother strongly disapprove of the match. When the Kirbys are invited to dinner to become better acquainted with their future in-laws, things don't turn out the way Alice had hoped.

Jean Stapleton
as Penny Sycamore

Barry Bostwick
as Anthony Kirby, Jr.

Blythe Danner
as Alice Sycamore

Marla Gibbs
as Rheba

Howard Hesseman
as Wilbur C. Henderson

Polly Holliday
as Miriam Kirby

Beth Howland
as Essie Carmichael

Robert Mandan
as Anthony Kirby

Kenneth Mars
as Mr. Kolenkhov

Harry Morgan
as Mr. DePinna