Elmo is shot during the shoot out. When one of the gang is brutally murdered, tensions run high and revenge is on everyone's mind. The tension escalates between Darren and John Boy but after Hughie accidentally shoots himself dead a truce is reached. Rosie has realised what her lover has become, and Darren is devastated when she breaks up with him. Profits are down in the ailing Irish economy and the police are closing in, the forensic accountants of C. Meanwhile Mary finally realises the extent of Luke's psychosis as she finds him lurking in her bedroom at night.
While there he meets Darren and gives him some of the money he owes him to help finance his move to London. John Boy plans to get his money out of the country and to retire to Spain, but his increasing cocaine use is making him more and more unpredictable and paranoid. He is too late to meet with Robbie and on his arrival Robbie is dead. Darren's brother Robbie is released from Cloverhill prison. For the death of friends in this case decided to retaliate, and that was going to do Darren. Darren is falling back in love with his ex-girlfriend again.
. Darren is soon re-arrested but gang boss John Boy Power pays for a solicitor to bail Darren out of his gun charges, which are thrown out of court on a technicality. Darren continues his life of crime, working for a drug dealer and arranging small drug deals. Gillen, especially, is a menacing, ruthless, bloodthirsty, totally amoral drug boss. John Boy, however, wants Stumpy taken care of and he wants Darren to be the one to deal with it.
Nigde and Tommy carry Hughie's coffin with John Boy. Darren is shot at by Elmo on John Boy's orders but he manages to shoot Elmo in the process. Clear divides have been made with John Boy, Hughie and Stumpy on one side and Darren, Nidge, Tommy and Eric on the other. Representatives of the criminal community died one after another. The acting is chillingly effective from two of the main gangster leads, Tom Vaughan-Lawlor and Aiden Gillen. Written by Definitely one of Irish Television's best ever series.
His brother Darren has also recently returned to Ireland after a period of time on the run from the law. Hughie and Martin kill Jimmy in front of his wife and child. Tracy lost control of occurring events, this cruel and deadly fight grew too. The drug lord claims he is innocent. Jimmy insists he did not not kill Robbie, Darren believes him and lets him go, both Nidge and Tommy are not happy.
Catastrophic events ignite tension among the drug gang, and family, friends and the community must live with the consequences. They stop off and Hughie as showing off his gun to Patsy, he takes the magazine out of the gun but forgets that there is a bullet still in the chamber, he points the gun to his head and fires. Hughie begins to get paranoid as the newspaper suggest that he is a loose canon and someone who John Boy will want dead. Another underworld figure, Hughie, eventually admits to killing Robbie. Stumpy asks John Boy for help, John Boy gives him a place to hide out. Meanwhile John Boy himself is spiralling. It depicts the drug addiction, squalor and violence of organised crime that has grown in post-boom Ireland.
Darren believes him but Nidge does not. Nidge decides he will have to confront the situation,and goes to Dundalk to meet with Tony and arrange a deal, which involves betraying one of his own. Darren rings Tommy to see what his delay is, which he covers up since he is sleeping with Darren and Robbie's sister Mary at the time. The gang also continually faces problems from the police, as law enforcement routinely arrests gang members and breaks up their hideouts. Meanwhile, John Boy finds out that it was his half-brother Hughie who killed Darren's brother. Darren has been living in Spain, on the run from charges of gun possession.
Naturally, he teams up with Nidge, his old buddy Vaughan-Taylor , mayhem ensues. Darren quickly gets arrested again but a local crime boss bails him out of jail in an effort to get him back in the criminal industry. Robert Sheehan plays a younger gang member who returns to Dublin from Spain when he has been in enforced exile. But how long will it hold? In the meantime, Darren reaches out to his ex-girlfriend. Meanwhile Dano is told info about this and pieces it together realising that Nidge and the lads were responsible for Git's death and plots to have him clipped against the wishes of the inquisiter.
The series focus on criminals operating in Dublin, Ireland's underworld. John Boy blames Stumpy who he believes sold them out. Darren Treacy returns to Dublin from Spain, spending time there while trying to avoid the Garda in Ireland for gun possession. Darren Tracy finds out about the murder of one of his friends, who were in a criminal gang. Hughie decides to hunt down Tommy, with Elmo and his cousin Patsy. Soon it turned into a real war, where it was impossible to find the guilty.
However the gang war is still raging, and John Boy orders Tommy - already caught between his friendship with Debbie and his worries about Siobhan's money runs - to kill Fran. Tommy Killian Scott is meant to collect Darren's brother from outside the prison but gets sidetracked by Darren's sister Mary Ruth Bradley. Hughie gets a favour returned by Martin to help him with the murder. She has a miscarriage and while she seeks him out for comfort, he is happy that she is not having another man's baby. Hughie and Elmo attack Tommy and Darren. The series starts with the shooting of Robbie, a convict who was recently released from jail.