Single, childless, fifty and deemed economically worthless, Dorrit leaves behind her married lover, her beloved dog and her ramshackle house and joins the residents of the Second Reserve Bank Unit for biological material, resigned to making her contribution to society by giving herself, organ by organ, to the 'necessary' population outside the Unit. Despite constant surveillance and the regular disappearance of inmates making their 'final donation', Dorrit and her new friends eat well, sleep well, keep fit, play hard and even make love, their fears deadened by the luxury of their surroundings, their new-found companionship, the atmosphere of calm, their freedom from financial worries. Is it possible that against all the odds, real happiness can exist in the Unit? When something truly extraordinary happens to Dorrit, highlighting the grotesque reality of her situation, she faces the hardest decision of her life. Will she exchange one nightmare for another?