Sidney Trefusis is a proselytizing socialist. Armed with irony and paradox, he is determined to overthrow a society riddled with class and sexual exploitation. Henrietta, his adoring wife, 'loves' him: he must abandon her. Son of a millionaire, he gives up everything to pose as an 'umble peasant'. But when this unsocial socialist goes to work as a gardener in the vicinity of a girls' school he meets his match - for Agatha Wylie is a new kind of woman, perfectly armed: and she doesn't love him.