Mim Lyons is a retired film actress, occasionally still recognized from her last great starring role in the late 1960s, but now more than content to restrict her performances to occasional play-readings with a group of old friends from the theatrical world. But when her agent calls out of the blue with a job offer, her husband begins to have his own dreams and schemes about the possibility of a comeback, in a part that unsettles Mim's perception of how her husband sees her - and of who she really is. As Mim struggles to preserve the quiet surface of the existence she has created away from the limelight, it becomes impossible to ignore the turmoil in the lives of those closest to her. While her friends' marriage hits the rocks, her son struggles to clean up his act, her estranged daughter floats back into her life, and her husband is suddenly rendered vulnerable, Mim gradually comes to reassess the roles she has been playing - as friend, as daughter, as mother and as wife - and to decide who exactly she wants to be.