The upcoming New Year's special will bring back one of the Doctor's most formidable foes - the Daleks. The Doctor finds herself imprisoned in a top-secret extraterrestrial jail. Solitary, abandoned, with no chance of liberation. Meanwhile, back on Earth, her closest companions, Yaz, Ryan, and Graham, must continue their daily routines in her absence. However, adjusting proves challenging. Particularly when they uncover a troubling scheme taking shape. A scheme that includes a Dalek. The Doctor's revolution against the Daleks is about to begin.