The story is set in Dublin's criminal underworld. The first season introduced John Boy, criminal kingpin, and the four friends Darren, Nidge, Robbie and Tommy as members of his gang. The show has also featured Ruth Negga, Ruth Bradley, Killian Scott, and Chris Newman. The story focused on rivalries within the criminal milieu and the psychological effects of violence on the Darren character. It is directed by David Caffrey and produced by Simon Massey, Suzanne McAuley, and James Flynn.