Kitty Grammont and Nicholas Chester are in love. Kitty is certified as an A for breeding purposes, but politically ambitious Chester has been uncertificated, and may not marry. Although Kitty wields power as a senior civil servant in the Ministry of Brains, which makes these classifications, she does not have the freedom to marry who she wants. They ignore the restrictions, and carry on a discreet affair. But the popular press, determined to smash the brutal regime of the Ministry of Brains, scents an opportunity for a scandalous exposure.