Michael Caine is Harry Brown - a pensioner who has just lost his wife and is living on his own in a seedy section of London. Harry's lone pastimes are playing chess with Leonard (David Bradley), his last living friend, and having a quiet pint at the local pub. Crime is rampant in the neighborhood. Local gangs are assaulting innocent passers-by with abandon and the police, led by D.I. Frampton (Emily Mortimer) and her partner D.S. Hicock (Charlie Creed-Miles), are unable to do much under the letter of the law to stop the deterioration. Harry remains quietly on the sidelines until Leonard is murdered. Then, seeing that justice won't come through the system, he decides to obtain it his own way. Even though Harry is in his 70s and has emphysema, his training from 50 years ago as a member of the Royal Marines has never left him. Now, he intends to treat the members of the gang who killed Leonard much as he treated the IRA in Ulster.
Michael Caine, Emily Mortimer, David Bradley