As the country continues to face darkness, Sutherland, Anna, Fraser and their teams pay a visit to the worst affected area in Northumberland to see the situation on the ground. But with the Prime Minister away, Archie’s incendiary comments on the dark underbelly of public mood threatens to cause more problems for everyone.

As questions are asked about Sutherland’s knowledge of his daughter’s involvement in her friend’s death, Anna seeks the help of Eleanor in handling the new revelations about Edin. Meanwhile, a new threat rears its head as public sentiment grows more turbulent.

As anarchy explodes on the streets and the nation is rocked with night upon night of rioting, Fraser and his team reach the endgame in their mission to get the lights switched back on in the Red Zone. Meanwhile, with his personal life imploding, Sutherland is forced to fight for his political life as Archie finally fires his first shots…