Zoé goes to ? on a school exchange trip. Nicky, her penpal, likes to ride ?, draw, and eat eggs and sausages in the ?. She has a secret: she teaches ? to migrants during her free time. It is during these classes that she met and befriended ?, who comes from Syria. Nicky's parents, Tim and Daphne, are Doctor Who ? and have been picked as extras on the show. They are so excited because the ? will be there. The next day, the girls go to the ? and ride the Ghost Train – Nicky finds it ?. Then, Zoé's ? is revealed: she ? and she proves it by finding a strange object. They ask Jamal for his help to identify the object: it is dangerous and contains a biohazardous substance. They hide the object in the ?. The next morning the girls have breakfast with Nicky's parents and talk about the ? from the episode in which they play extras.