It is the Swinging Sixties, and Rosamund Stacey is young and inexperienced at a time when sexual liberation is well on its way. She conceals her ignorance beneath a show of independence, and becomes pregnant as a result of a one night stand. Although single parenthood is still not socially acceptable, she chooses to have the baby rather than to seek an illegal abortion, and finds her life transformed by motherhood. The "Millstone" is a celebration of the drama and intensity of the mother-child relationship.