When a truck bomb destroys Whitehall Prime Minister Harry Beecham survives - only to learn the attack is the opening strike in a coup designed to conquer Britain. Rescued by the SAS Harry must escape a chaotic London to reach a secure refuge in the West Country as political traitors invite Islamic forces onto British soil. Elsewhere ex-con Morgan Blake and his neighbour Izzy Gray watch an airliner fall from the sky over west London. With streets descending into violence and panic Morgan activates a desperate plan to escape the capital - a plan that becomes a brutal test of courage instinct and trust. As an invading army gathers on the Scottish border British troops dig in for the final brutal fight - but Harry Beecham has one last desperate plan - one that could either reclaim a nation or finish it forever. The battle for Britain has begun.
