Martin and Gwen are a childless couple in their 40s, but not by choice. The baby nursery in their house is locked and unused, and they yearn for the child they will never have. And then they hear about adult babies and how some regress very deeply and even permanently. Could they still have their own baby, just a little differently? Their adventure is one of love and desire and exposes a world they never knew existed. And they begin: The Nesting Circle