Joe Clay (Jack Lemmon) works at a public relations agency. One of his unofficial duties is to provide escorts for his clients. The movie begins with Joe working the phone, rounding up girls for a party being held on a yacht on the bay.
Then ... A cab pulls up alongside the bay and a young woman gets out.
Then ... She makes her way towards a small boat berthed at the yacht club - in the background is a domed structure very familiar to San Franciscans.
Then ... Joe and the girls are waiting for her in the boat - she climbs aboard to a sharp dressing-down from Joe for not dressing up ...
"You're dressed wrong, it's supposed to be a cocktail dress ... something peek-a-boo!"
Then ... Their tender pulls alongside the party yacht.
On the yacht Joe realizes that the underdressed woman isn't one of the escorts after all, she's Kirsten Arnesen (Lee Remick), the secretary of the client hosting the party. He tries to make amends but she plays it cool. They couldn't have gotten off to a rockier start.