On her fiftieth birthday, Dorrit Weger is checked into the Second Reserve Bank Unit for biological material: a state-of-the-art facility in Sweden where she will make new friends, enjoy generous recreational activities and live out her remaining days in comfort with people who are just like her. Here, women over the age of fifty and men over the age of sixty who are single and childless are saved from a life devoid of value and converted into productive members of society. The price? Their bodies, harvested piece by piece for the necessary ones (those on whom children depend) and sometimes their minds, as they take part in social and psychological experiments, until the day comes when they make their Final Donation and complete their purpose in life. Despite the ruthless nature of this practice, the ethos of this near-future society and the Unit is to take care of others. Resigned to her fate as a dispensable, Dorrit finds her days there to be peaceful and consoling. For the first time in her life she no longer feels like an outsider a single woman in a world of married couples with children. But when she meets a man inside the Unit and falls in love, everything changes