Trendy Manhattan art gallery owners Barbara and David Kahn lives are upended when her Mineola housewife sister Trudy deposits their eccentric mother Sophie on the couple's doorstep while she and her husband Martin head to Buffalo to rescue their sexually precocious college student daughter from a menage a trois with two men. Barbara and David introduce Sophie to suave nonagenarian artist Maurice Koenig, who offers to paint her portrait and soon begins to brighten her life in ways she never expected in her twilight years.