Mirko is happily married man in his forties, employed in a record company. His quiet life is interrupted when a pretty young woman moves into an apartment on the upper floor. With the help of his friend Stipe, Mirko tries to seduce the aspiring singer - but their plans don't work out as expected.

During questioning by the police, a railway worker falls to his death from the multi-story police HQ. The government says it was an accident but there is a public outcry. The Superintendant and Inspector responsible are awaiting the arrival of an Investigating Judge but get more than they bargained for when a lunatic escapes and impersonates him.

A British Cabinet Minister is gunned down outside his home in London by a member of the Provisional IRA. Security protocols are activated, but the assassin evades them and successfully escapes to Belfast. In the aftermath of the incident, rash decisions are made by politicians seeking revenge, and the Ministry of Defence responds by sending Captain Harry Brown (Ray Lonnen) - a special forces soldier who has done deep cover work in hostile territory - into the Falls Road area of Belfast, notorious for civil unrest and Republican activity. Harry's mission is to infiltrate the local nationalist population, uncover the identity of the assassin, and kill him in his own neighborhood - proving to the IRA that they are not safe, even in their "own back yard".