Fabio has always been in love with his colleague Linda Vita but she has never seen him in four years despite attempts to Fabio until he contacts her but due to a mistake she believes is her boyfriend. Paolo Berni and Mario Patani have organized a luxurious vacation in Rio de Janeiro for the Christmas holidays but don't know that their sons Piero and Marco have booked a trip for the same low-cost destination and for a problem of homonymy between fathers and sons, the two holidays are exchanged.