An aging London crime boss--who's only known as Gangster 55 (McDowall)--learns that his mentor Freddie Mays (Thewlis) is just out of prison after a 30-year stretch for murder. Flashback to 1968, when a young, ruthless Gangster (a ferocious Bettany) earns his place by taking on Freddie's rivals. Then Gangster becomes jealous of Freddie's girlfriend, Karen (Burrows), and learns of a plot to rub out Freddie. He plans on setting up his boss and becoming head man but never expects to have to confront his past someday. Based on the play by Louis Mellis and David Scinto.