Matt Logan is an MI5 agent for the British government. Working on the frontline of counter-terrorism in the UK he's trained to protect its citizens against all threats.When two brothers known operationally as 'Iron Sword' and 'Stone Fist' are suspected of plotting a major terrorist event, Logan and his team work undercover to track them down. If they fail, an attack will be unleashed that will rock the country to its very core.