Johnny Doyle escapes a violent past as a Provisional IRA volunteer in Ireland to lie low in London, until his former mentor Flynn breaks out of Brixton Prison, members of a dissident republican group they are hellbent on derailing the Irish peace process with a few well-placed bombs. Unable to escape Brixton, they find themselves trapped together in Johnny's anything-but-safe safe house, sandwiched between a friendly Rastafari movementan reggae pirate radio station upstairs and a local Yardie, heroin-dealing gangster Julius, downstairs.