Franco and Dino, two mechanics from Rome, friends for life and incorrigible batchelors, leave for Las Vegas to take part in the Harley Davidson world rally, a passion they both share in common. They hope to win the substantial prize and be able to retire for good. But what they really dream of, is : music. The two of them are infact incredible at dancing and singing, their voices are reminiscent of Frank Sinatra and Dean Martin, but they never thought of using them for a career.