MI6's top assassin (Mark Strong) has a brother. Unfortunately for him, he's an English football supporter (Sacha Baron Cohen) from the town of Grimsby. Nobby has everything a man from the poor English fishing town of Grimsby could want - 9 children and the most attractive girlfriend in northern England (Rebel Wilson). There's only one thing missing in his life: his little brother, Sebastian.
Mari and her friend look forward to a holiday at the remote Collingwood lakehouse, but instead an escaped convict (Garret Dillahunt) and his crew kidnap them and later leave them for dead. Mari makes her way back home, where her parents, John (Tony Goldwyn) and Emma (Monica Potter), have unwittingly offered shelter to the thugs. When John and Emma find out what happened to their daughter, they decide to make the strangers rue the day they harmed Mari.
A group of twentysomething New Yorkers discuss their lives and future at the party on New Year's Eve 1999.