Women rule in Women's Country.

Women live apart from men, sheltering the remains of civilization. They have cut themselves off with walls and by ordinance from marauding males. Waging war is all men are good for. Men are allowed to fight their barbaric battles amongst themselves, garrison against garrison. For the sake of his pride, each boy child ritualistically rejects his mother when he comes of age to be a warrior. But all the secrets of civilization are strictly the possession of women.

Naturally, there are men who want to know what the women know! And when Stavia meets Chernon, the battle of the sexes begins all over again. Foolishly, she provides books for Chernon to read. Before long, Chernon is hatching a plan of revenge against women!

SF Masterworks #117