Michael Lynch (Spacey) is Dublin's most notorious criminal, his brazen robberies making him the bane of the Gardaí and a hero to his fellow working class city Northsiders. When not playing happy families with his two wives - sisters Christine (Fiorentino) and Lisa (Baxendale) – and his children, Lynch is busy plotting elaborate heists, thinking as much about the showmanship of it all as he is the loot involved. On his case is garda Noel Quigley (Dillane), his determination to convict Lynch slowly turning into an obsession. Inevitably, a showdown looms.