Sixty and still sexy, Harry (Jack Nicholson) is having the time of his life, wining, dining and bedding women half his age. When he meets an auctioneer (Amanda Peet) and agrees to go to the Hamptons with her, he's convinced he's in for a sinfully fun weekend. Plans go awry when her playwright mother, Erica (Diane Keaton), stops in unannounced, and Harry soon discovers there's nothing wrong with -- and plenty good about -- acting your age.