While Clara is teaching one day, the Doctor travels on his own to 1600s London, where he encounters the immortal Ashildr, who has taken the name "Me."
The apparent suicide of a DJ leads Nikki to question her judgement on a strikingly similar case from her past.
Barry takes advantage of a sandstorm to overrun the Caliphate's military base; Leila re-examines her loyalties and makes a bold play in the palace; Molly uses all the resources at her disposal to try and save Barry's life.
Jamal wants military support from the Chinese; Barry stays in Abuddin and stands up to the Caliphate; Sammy finds out that Abdul has been kidnapped.
Barry encourages Rami to stay and oversee the transition; Leila cooperates with the Arab League, hoping to secure a position for herself and Ahmed in the new world order.