Gullible young solicitor Adam finds himself attracted to Megan, his beautiful fellow employee, and dominated by worldly-wise workmate Donna. The owner of a slinky, City-based fetish club finds she is being defrauded by a mysterious regular known as The Priestess. Submitting their own sexual tensions to the rules of the club, and discovering its association with a bizarre 'sanatorium', the trio discover that their lives will never be the same again.