Sara (Sandy Dennis), a free-spirited single woman living in Brooklyn, invites a new man to stay with her every month. For Sara, this is an opportunity to expose a man to new things, but it's also a way to make sure she will always be remembered by someone. Her latest boarder is Charlie (Anthony Newley), an uptight British businessman. Things, however, don't go as planned, and the two fall in love. Despite this, Charlie cannot stay any longer than his allotted month.