Doctor Who (2005)

S09E05 The Girl Who Died (1)

In a Viking settlement, Ashildr faces a grave decision that could lead to disaster. Known for their ruthless efficiency, the Mire are the galaxy's most feared mercenaries, and Ashildr has just ignited a conflict with them. With time running out, the Doctor and Clara must transform the once-peaceful villagers into formidable warriors within 12 hours, preparing them for the impending threat posed by the merciless Mire.