Agent 57 sends word to H.Q. that Greenback has build his latest hideaway on a pinnacle of rock in the middle of a volcanic crater in Northen Iceland. Furthermore, 57 has disguised himself as a flat battery, so the Baron can't start his Froghead flyer. When Dangermouse and Penfold arrive on the scene, they bump into Grigious M. Murphy, a gadget salesman who tries to interest them in a personal combat accessory kit.
—The TV Archaeologist