Middle-class, middle-aged, and middle-of-the-road lawyer Douglas Ashburner has never been much of a womanizer. So when he tells his wife he’s going on a fishing holiday, she takes his word for it. But instead of leaving London for Scotland, he departs from Heathrow to Moscow. Douglas is tagging along with his mistress, a sculptor named Nina St. Clair, on a tour of Russia arranged by the Soviet Artists’ Union. Accompanying them on the trip are two other artists: the impudent Bernard Douglas and the irritable Enid Dwyer.