Intermission

The film opens with a cashier being charmed by Lehiff (Colin Farrell) who, after flirting with the girl, punches her in the face and steals from the till. It quickly moves to John (Cillian Murphy) and Deirdre (Kelly Macdonald) who are a recently separated young couple. The film will revolve around their extended friends.

It is quickly revealed that Lehiff is a petty criminal always involved in trouble. Lehiff's nemesis, Garda Detective Jerry Lynch (Colm Meaney), presents himself as a saviour whose main mission is to fight the "scumbags" on Dublin's streets. He enlists the help of Ben Campion (Tomás Ó Súilleabháin), an ambitious film-maker and the bane of his "go-softer" boss, who considers Lynch too nasty a subject to be shown on a mainstream "docusoap" series on Irish television.