Following the crisis in Ukraine and Russia’s involvement in Syria, the world is closer to super power confrontation than at any time since the end of the Cold War. Now a committee of senior former British military and diplomatic figures comes together to war game a hypothetical ‘hot war’ in Eastern Europe, including the unthinkable - nuclear confrontation.
　　The War Room faces a scenario that has haunted western strategists since civil war broke out in Ukraine: potential Russian military involvement in the Baltic States of Latvia and Estonia. Like Ukraine these countries have sizable Russian speaking minorities, but unlike Ukraine they are members of NATO, whose founding treaty states that an attack on one ally is an attack on all of them. Because of this, western analysts regularly war game a situation where Russia seeks to exploit ethnic tensions in the Baltic and test the strength of the NATO Alliance.

　　日本一座地方城市，韓國人后代祐司（金英勛 飾）、K（延政勛 飾）、俊伍（李智勛 飾）以及日本人小泰（北村一輝 飾）是親密無間的好朋友，而這幾名充滿熱情和活力的重情重義年輕人卻遁入黑道，走上一條充滿刀光血影的不歸路。他們所在的韓國人幫派與某日本黑幫發(fā)生沖突，在一次對抗中， 他們的大哥龍俊慘遭槍殺。沖突漸次升級，組織大佬成浩和東安擬與對手和談，但K等四人決不肯咽下這口惡氣，他們自作主張向對方發(fā)起報復，誰知一旦出手便無法回頭，青年們的生命遭到威脅，友情也遭到前所未有的考驗……
　　本片根據(jù)真實事件改編。