Civil servant, Elizabeth Lane, appears to be the model of respectability and conformity during working hours, but her private life is quite a different story as it involves lashings of lesbian sex and spanked bottoms! She lives rent free in a luxury flat in London, now owned by the widow of the late Sir John Shrewsbury for whom Elizabeth had previously provided 'disciplinary services'. In lieu of paying rent every month, she instead submits to a bare bottom spanking from Lady Shrewsbury. In collaboration with a bi-sexual friend, Elizabeth decides to offer similar services to well-connected and wealthy women in need of a spanking, using a dedicated 'Punishment Room' set up in her flat. Margaret, one of the 'clients' she encounters, turns out to be the personal assistant for a very well known business woman, and the two ladies soon form a deep loving bond before embarking on a passionate but clandestine lesbian relationship, in which Margaret gets to relive the childhood spankings provided by her nanny. As their love and desire for each other intensifies, the need to go public about it grows, but will they be able to overcome the many obstacles that stand in their way?