The Doctor, along with the lady Christina de Souza and other passengers, finds himself transported to a barren desert planet on a double-decker bus. As the Doctor and Christina struggle to uncover the mysteries beneath the sand, the Swarm draws closer.
| Creator | Sydney Newman |
|---|---|
| Actor | Jodie Whittaker, Mandip Gill, John Bishop |
| Country | Canada, United Kingdom |
| Production | BBC Cymru Wales |