: Kara (Olga Kurylenko), a Russian spy and Adam's former lover, reappears in his life. She reveals that she has been secretly manipulating circumstances for years to help his meteoric rise, and now she needs his help in return.
: Adam Lawrence (Charlie Cox) unexpectedly becomes the youngest head of MI6 after his mentor and boss, Sir Martin Angelis (Ciarán Hinds), is poisoned.
: As Adam navigates his new responsibilities, his past begins to compromise his present. His wife, Maddy (Oona Chaplin), grows suspicious of his secretive behavior and a mysterious rendezvous he has with Kara.