Enrico Melotti, a middle-aged businessman, has a difficult relationship with his wife, maid and secretary/lover. During a business trip to America, his friend Arturo shows him the key to solving all of his problems: Caterina, a female-looking robotic maid that does all domestic chores better than any human.

Alberto Sordi
as Enrico Menotti

Edwige Fenech
as Elisabetta

Valeria Valeri
as Marisa Menotti

Catherine Spaak
as Claudia Parise

Rossano Brazzi
as Arthur

Victoria Zinny
as Susan, a Pamela employee

Susan Scheerer
as Pamela, the entrepreneur

Andrew I. Miller
as The American engineer

Elisa Mainardi
as Teresa, the maid

Ugo Bologna
as The man on the plane