Nudist genetics student Belle Pudget remains an uncaned submissive until Geisha, slave of dominatrix Dr Jolita Cunliffe, introduces her to bare-bottom chastisement. Belle joins the Paine Institute on a remote island where, free of western taboos, Cunliffe's sadistic rival Darwinia Paine whips her nurses into servitude, trying to unlock the secrets of eternal youth. Belle must ultimately choose whether to bare her buttocks in submission, or wield the lash... forever.