Forced to participate in the diamond wedding anniversary of his ex-wife's parents, Carlo relives the secret agreement he made with Sandra 10 years earlier: keeping their separation a secret for everybody. A memorable evening of laughter and a good glass of vino, helps the couple to rediscover the old complicity. Back in Rome, Carlo receives the visit of his friend Max, desperate for having been left by his wife. Carlo, then, finally finds the courage to declare himself to the beautiful pharmacist Annalisa.