Indigo, bookseller and CP-loving submissive, is obsessed with an antiquarian work of sadomasochism which eluded her father all his life. Caned, roped and shamed through the fleshpots of Europe, she will suffer any indignity to prevent Dervil Badon and his transsexual slave Natasha from getting their hands on her prize. But Dervil has no intention of allowing a mere submissive to own the legendary Book of Punishment.