If the British parliament wanted to introduce Prohibition into England, how would they go about it? Probably, as Chesterton suggests, by making some such innocent-seeming law as that liquor could only be sold from a place displaying an Inn sign. And then doing away with Inn signs. The rich, of course, would not suffer, special licenses being granted to exclusive clubs and restaurants which had "proved hardship". And who would rebel? An Irishman (of course) and a country innkeeper. This book is the story of such a pair who travel across England with an inn sign and a barrel of rum, turning the most unexpected places temporarily into inns, simply be setting up the sign.