Jack Lemmon and Shirley MacLaine star in this classic comedy drama co-written and directed by Billy Wilder. Insurance clerk C.C. Baxter (Lemmon) allows his superiors to use his apartment to facilitate their affairs and as a result begins to make his way up in the company.

However, when personnel director Jeff Sheldrake (Fred MacMurray) wants to use the apartment for a rendevouz with Fran Kubelik (MacLaine), an elevator operator to whom Baxter is attracted, the arrangement swiftly begins to unravel and Fran must decide which man she wishes to be with.