As widespread power outages cause chaos and threaten lives across the country, the COBRA committee comprised of the UK's leading experts and politicians, gathers to find a way to turn the lights back on.
Cast:Robert Carlyle , Victoria Hamilton , David Haig , Lisa Palfrey , Marsha Thomason , Edward Bennett , Richard Dormer , Lucy Cohu , Richard Pepple , Alexa Davies , Joshua Hogan , Grace Hogg-Robinson , Marisa Abela , Emmanuel Imani , Ellie Kendrick , Andrew Buchan , Jane Horrocks , Steven Cree
COBRA responds to a volatile situation in Kent, while an unseen enemy strikes from the shadows.
As the cyber attack continues to jam communications, the Prime Minister convenes an emergency COBRA meeting following the devastation in Kent.
COBRA is assembled when fresh disaster strikes, as a breach at Dover port suggests an insidious threat. The PM's strategy is tested by an activist.
The team scramble to understand the latest shocking discovery, while Francine's criticism of Lord Singer is met with delight by the Labour leader.
Rachel is dismayed by the fresh assault on her reputation, but Robert is distracted after Firestorm's return. Reports of a new cyber attack arrive
Reeling from the events in Kent, the COBRA team are briefed on a sophisticated malware which has infected the UK's critical infrastructure.