Bernard, Harry and Alfie are three harming but unsuccessful crooks whose smash-and-grab tactics always go awry. On their way to another stint behind bars, the trio spot an on call fire engine and hatch a new plan. Upon release they set out to acquire a fire engine to use as the perfect getaway vehicle on a jewellery robbery. When the gang get mistaken for real firemen their plan begins to slowly unravel. Scared off by the police, Harry runs for cover in a local boutique where he meets beautiful sales assistant Chantal, who might just hold the key to finally pulling off a successful heist.