Season 2 picks up with GCHQ's Head of Operations Danny navigating a fresh national security crisis, as a new wave of sophisticated cyber threats puts Britain back on the brink. A mole inside the organization forces Danny's childhood friend and Head of Security, Charlie Francis, to hunt for the leak from within. Meanwhile, a newly seconded Lt. Colonel arrives with a mandate that Danny sees as a direct challenge to his authority. Shifting the lens from Season 1's wide-eyed newcomer Saara to the battle-hardened Danny, the season deepens its portrait of the unseen digital warriors protecting democracy — and the personal costs they pay to do it.
