Withdrawn, uneducated and unloved, Frederick collects butterflies and takes photographs. He is obsessed with a beautiful stranger, the art student Miranda. When he wins the pools he buys a remote Sussex house and calmly abducts Miranda, believing she will grow to love him in time. Alone and desperate, Miranda must struggle to overcome her own pejudices and contempt if she is to understand her captor, and so gain her freedom.