Two employees at a gift shop can barely stand one another, without realising that they are falling in love through the post as each other's anonymous pen pal.
Amidst the French revolution, Citizen Robespierre is beheading the aristocracy! When word gets to England, noblemen Sir Rodney Ffing and Lord Darcy Pue take it upon themselves to aid their French counterparts. Sir Rodney is a master of disguise, and becomes 'The Black Fingernail' scourge of Camembert and Bidet, leaders of the French secret police.
