It is possible to enjoy Claude Lelouch's Man and a Woman: 20 Years Later on its own merits, though we advise that to fully appreciate the film, it's best to catch Lelouch's 1966 blockbuster
A Man and a Woman first. True to its word, the 1986 film brings us up to date with the protagonists of the earlier picture. One-time movie script girl Anouk Aimee is now a producer, suffering a slump due to a string of box-office bombs. Former race car driver Jean-Louis Trintigant now books races for younger drivers. His love affair with Aimee long in the past, Tritignant is startled to receive an out-of-the-blue phone call from his former
amour. She wants his permission to film a musical version of their romance, but with more "suitable" younger leads. Alas, Aimee has been part of the Studio System too long, and can't help but include a pointless subplot involving an escaped lunatic. Aimee must give up her show-biz excesses, and Tritignant must forsake his much-younger mistress Marie-Sophie Pochat, in order to clear the decks for a happy ending. ~ Hal Erickson, All Movie Guide