Michael Caine in Roger Moore bosta upodobila spretna zmikavta, ki skrivata svojo identiteto in si prizadevata ukrasti skrivno formulo, ki naj bi omogočala neomejen izvor energije in bila vredna celo bogastvo. Nepridiprava se izdajata za znanstvenika, ki sta zaslužna za revolucionarni izum, nato skušata vdreti v njun sef in tako izmakniti skrivno formulo. Vendar niti ne slutita, da se bosta tako zapletla v mrežo spletk in odkrila mednarodno prevaro.
Moore and Caine play dual rolls in this off-beat and highly silly caper - a pair of small time con-men and a partnership of nuclear physicists. As con-men, they use their uncanny resemblance to the high-living scientists to con their way to the scientists' safety deposit boxes, but in so-doing become entangled in a shady world of spies and international intrigue.