Clara struggles to balance between the excitement of being the
Twelfth Doctor's
companion, the normality of teaching at
Coal Hill School and keeping her relationship with
Danny, a former soldier. The Doctor alerts Clara he will need to go alone on his next outing under "deep cover", but Clara is surprised the next day that he has been hired as a temporary caretaker. Privately, the Doctor explains that a murderous robot, the Skovox Blitzer, is near the school, and has already killed a community support officer. If he does not intervene, it could destroy the Earth. He has been planting devices around the school to create a time displacement vortex in order to send the robot far into the future where it cannot harm anyone, and has an invisibility watch to help approach it. Danny observes the Doctor's interactions with Clara and becomes suspicious of him. He inadvertently finds one of the devices the Doctor has planted and interferes with its settings. When the Doctor attempts to carry out his plan, Danny's change causes the Blitzer to only be displaced forward by 74 hours. After seeing the Doctor again approach Clara discussing this change in plan, Danny accosts Clara, believing she is an alien, during which Clara admits her love for Danny. Doctor Who argues Clara has made a "boyfriend error" for dating Danny and argues with Danny, repeatedly dismissing him as a P.E. teacher (which becomes a nickname for Mr Pink) and refusing to accept he is a Maths teacher. Clara lets Danny use the invisibility watch to see how she interacts with the Doctor. However, the Doctor is aware of Danny's presence, and Danny compares the Doctor to an officer before leaving. Meanwhile, student
Courtney Woods has come across the Doctor's
TARDIS and starts following him around. At Parents' Evening, the Blitzer rematerialises earlier than expected. The Doctor and Clara inadvertently trigger the Blitzer's self-destruct mechanism, but Danny's timely intervention allows them to force it to stand down. The Doctor offers Courtney a trip in the TARDIS as he leaves the inactive Blitzer in deep space, but Courtney ends up getting sick and throwing up within the TARDIS. On Earth, Danny tells Clara he is impressed with her resolve under the Doctor but not to let him push her too far, or otherwise their relationship will be over. Meanwhile, the community support officer awakens in the Promised Land, also known as the Nethersphere. The interviewer, Seb, informs him of his death and their whereabouts, and states that
Missy is too busy to deal with him.
Continuity The pseudonym "John Smith" has been used by the Doctor multiple times throughout the show, starting in
The Wheel in Space (1968). The Doctor mentions
River Song, who last appeared in "
The Name of the Doctor" (2013). == Production ==