Bunny Watson (Katharine Hepburn) heads up the research department at the Federal Broadcasting Company, a major TV network. And she does her job very well, thank you very much. Assigned by the network president to introduce computers into some of the department's functions, Richard Sumner (Spencer Tracy) arrives at Bunny's well-run division to observe daily activities. Unfortunately, however, Sumner is ordered to keep his mission secret. As a result, the whole staff believes they are being replaced. To make matters worse, there appears to be more than a little electricity between Bunny and Sumner, which upsets Bunny's boyfriend Mike (Gig Young). As tension in the office mounts, so do the laughs in this classic romantic comedy.