The House of Correction is owned by top London dominatrix Mistress Helena. It is where rich masochists stay to receive advanced slave training and become officially 'collared'. Helena is aided in the maintenance of its strict disciplinary regime by Sylvie and Christopher.

Christopher feels uncomfortable in this role, however, as he is essentially submissive. In order to resolve this conflict Helena agrees to his request to become a slave within The House of Correction.

Sylvie has always resented Christopher and sees this new turn of events as an opportunity to mistreat him so ruthlessly that he will be forced to leave. However all the current slaves in The House of Correction have in their different ways good reason to be grateful to Christopher and between them they contrive to confound Sylvie's malicious plan.