Four hundred years ago, in a small town in rural France, a young woman creates the future in the shape of Rupetta. Part mechanical, part human, Rupetta's consciousness is tied to the women who wind her. In the years that follow she is bought and sold, borrowed, forgotten and revered. By the twentieth century, the Rupettan four-fold law rules everyone's lives, but Rupetta--the immortal being on whose existence and history those laws are based--is the keeper of a secret that will tear apart the world her followers have built in her name. The closeness between women is mirrored in the relationship between Henri and Miri, a woman at the college with whom she fall in love, and also between mothers and daughters and grandmothers and granddaughters - a heritage of affection that loops down over the centuries.