A home-care worker who lost her husband the previous year is left lonely and sexually frustrated. The father and his adult son exploit her vulnerability and begin demanding sexual services far beyond the limits of her caregiving job. They gradually take control of the widow's unfulfilled mind and body, and their sexual treatment becomes rougher and more sadistic with each passing day. Yet the harsher they treat her, the more pleasure her mature body feels. Each side seems to supply what the other lacks as they sink into a depraved physical relationship, eventually leading to a bizarre life together under the same roof.