At a wild party during the 60's, baby Thomas Henry Butterfly Rainbow Peace (a.k.a the 15th Duke of Bournemouth) is accidentally "misplaced" by his rich hippie mum and dad. When the wrong baby is claimed, the real heir winds up being raised by a poor Pakistani family, while the "heir apparent" grows upon America with a silver spoon in his mouth. Once Tommy Patel (Idle) learns that he, not Henry Martin (Moranis), is the true Duke of Bournemouth, He'll do anything to get back what he's lost! Fortunately for Henry, Tommy's a pretty inept assassin. Unfortunately for them both, Tommy's seedy lawyer Shadgrind (Cleese) is a tad more adept! Add to the mix a scandalous, nymphomaniacal Duchess(Hershey), a gorgeous gold digger (Zeta-Jones), plus a host of assorted loonies, and you have a Pythonesque cavalcade of silliness. Can Tommy regain his Dukedom, survive Shadgrind's schemes, avoid being seduced by his own unwitting mom, and marry the girl of his dream's? Find out for yourself. You'll split your sides laughing!