MI5 supremo Harry Pearce and team leader Adam Carter soon begin to suspect that rogue members of the British 'Establishment' may themselves be sabotaging the very system they sought to uphold in order to bring about a radical change of government...

The growing crisis necessitates that the team work closely with head-strong, high-flying MI6 agent Ros Myers, who soon makes her presence felt on The Grid and instantly generates an undeniable spark with Adam.