“Something's happening with the spiders in this city.” The Doctor, Yaz, Graham and Ryan find their way back to Yorkshire - and Yaz's family - only to find something is stirring amidst the eight-legged arachnid population of Sheffield.

The Doctor is imprisoned halfway across the universe. On Earth, the sighting of a Dalek alerts Ryan, Graham and Yaz. Can the return of Captain Jack Harkness help them stop a deadly Dalek takeover?