Contemporary reworking of Shakespeare's 'problem play', set in the context of the modern British army. Angelo (Daniel Roberts), a strict and frustrated young officer, has been empowered by the Duke (Simon Phillips) to rule his land, whilst the Duke wanders about disguised as a friar to investigate the moral decay of his dukedom. Resorting to an old law against fornication to enforce his strict standards of morality, Angelo proceeds to condemn fornicators to death. One of these fornicators is Claudio (Simon Nuckley), a young man who has had pre-marital sex with his fiancee. When Claudio's sister Isabelle (Josephine Roberts) pleads for her brother's life, Angelo's own lust is aroused and he uses his power to blackmail Isabella into his bed. Fortunately the Duke overhears, and intervenes. Angelo then mistakenly ends up in the bed of Marianna (Emma Ager), a woman from his undisclosed past. Claudio is allowed to live happily ever after with his fiancee, and the virtuous Isabella ends up marrying the Duke.