Against the backdrop of the Irish War of Independence, two brothers fight a guerrilla war against British forces.
In 1920, rural Ireland is the vicious battlefield of republican rebels against the British security forces and Irish Unionist population who oppose them, a recipe for mutual cruelty. Medical graduate Damien O'Donovan always gave priority to his socialist ideals and simply helping people in need. Just when he's leaving Ireland to work in a highly reputed London hospital, witnessing gross abuse of commoners changes his mind. he returns and joins the local IRA brigade, commanded by his brother Teddy, and adopts the merciless logic of civil war, while Teddy mellows by experiencing first-hand endless suffering. When IRA leaders negotiate an autonomous Free State under the British crown, Teddy defends the pragmatic best possible deal at this stage. Damien however joins the large seceding faction which holds nothing less than a socialist republic will do. The result is another civil war, bloodily opposing former Irish comrades in arms, even the brothers.
Ireland, 1920. Damien and Teddy are brothers. But while the latter is already the leader of a guerrilla squad fighting for the independence of his motherland, Damien, a medical graduate of University College, would rather further his training at the London hospital where he has found a place. However, shortly before his departure, he happens to witness atrocities committed by the ferocious Black and Tans and finally decides to join the resistance group led by Teddy. The two brothers fight side by side until a truce is signed. But peace is short-lived and when one faction of the freedom-fighters accepts a treaty with the British that is regarded as unfair by the other faction, a civil war ensues, pitting Irishmen against Irishmen, brothers against brothers, Teddy against Damien....
- Ireland 1920: workers from field and country unite to form volunteer guerrilla armies to face the ruthless "Black and Tan" squads that are being shipped from Britain to block Ireland's bid for independence. Driven by a deep sense of duty and a love for his country, Damien abandons his burgeoning career as a doctor and joins his brother, Teddy, in a dangerous and violent fight for freedom. As the freedom fighters bold tactics bring the British to breaking point, both sides finally agree to a treaty to end the bloodshed. But, despite the apparent victory, civil war erupts and families, who fought side by side, find themselves pitted against one another as sworn enemies, putting their loyalties to the ultimate test.