Jerry Lewis plays Norman Phiffer, a proud man in a humble life, who doesn't know that his girlfriend, Barbara, is heir to the Tuttle Department Store dynasty. Mrs. Tuttle, Barbara's mother, is determined to split the two lovers, and hires Norman in an attempt to humiliate him enough that Barbara leaves him. Will she ruin their love, or will he ruin her store?

Jerry Lewis
as Norman Phiffer

Jill St. John
as Barbara Tuttle

Ray Walston
as Mr. Quimby

John McGiver
as John P. Tuttle

Agnes Moorehead
as Phoebe Tuttle

Francesca Bellini
as Shirley Lott

Fritz Feld
as Irving Catastrophe

Nancy Kulp
as Emily Rothgraber

Milton Frome
as Francois

Peggy Mondo
as Lady Wrestler