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".

An IRA informer and his family are given new identities and new lives in Australia but the IRA are still determined to track them down.

Through the eyes of various Irish Republican Army (IRA) members, explore the extremes some people will go to in the name of their beliefs, the way a deeply divided society can suddenly tip over into armed conflict, the long shadow of radical violence for both victims and perpetrators, and the emotional and psychological costs of a code of silence.

The remarkable story of the Irish War of Independence (1919-1922) which resulted in the formation of the Irish Free State and became the model for other British colonies to gain their independence.