Sanders and Hackett plan to steal the priceless Golden Head of Saint Lazslo, but the children of a British detective on holiday in Budapest discover the scheme and report it to daddy. This leads to a climactic chase via speedboat on the Danube. The plot is too simplistic to be believed,
and the film's pacing is far too slow. Lots of travelog style footage is tacked on as filler. Hackett's endless mugging is annoying.
