An elderly right-wing politician is kidnapped, seemingly as part of a student prank. But his captors have a more alarming agenda.
Billy Oates meets a lady in a market and, taken by his kindness, she invites him to lodge with her and her husband. A rivalry soon develops between the young man and his landlord.
A police raid on Edna Bossom's discreet hotel would be most ill-advised, in the opinion of Superintendent Willow; but one of his younger officers is determined to go ahead with one.