Anna, the voluptuous, fun-loving but illiterate maid, played vivaciously by blond Sammi Davis, has been given the day off to go to the fair. It's a lovely country scene, with a carousel and Ferris wheel and Anna being treated to her rides by a handsome gentleman. The soft-spoken Edith, played with elegance and grace by Hannah Gordon, looks on longingly. She, too, has wandered out alone to take in the festivities, something her stern and undemonstrative husband, Arthur (Kenneth Haigh), would no doubt disapprove of.
Preoccupied with business dealings, Arthur runs a tight ship. Not trusting his beautiful wife to do his housekeeping, he has left it in the hands of his sister Letty (Anna Massey), an efficient, kindly soul who constantly tries to convince him Edith is quite capable of being mistress of the house.
The household routine is disrupted when Anna returns home late, all bubbly and excited about the young man she met. It develops he's a young barrister
from London, Charles Bradford (Martyn Stanbridge), and he has written her a love letter she wants desperately to answer. The problem is she can't write.