But she has a secret.
She worked as a dominatrix when younger.
One of her pupils, Richard, discovers her secret, and so does Carol, her over-sexed secretary.
The headmistress becomes a dominatrix again to ensure their silence, aided and abetted by her daughter and granddaughter, both dominant, and by Henry, a muscle-bound submissive.
They also ensure the silence of Richard's mother and father.
The Caning Mistress is 49,600 words, and contains strong femdom themes, including caning, whipping and noose-play.