War of the Sontarans

"War of the Sontarans", prefixed frequently with either "Chapter Two" or "Flux", is the second episode of the thirteenth series of the British science fiction television programme Doctor Who, and of the six-episode serial known collectively as Doctor Who: Flux. It was first broadcast on BBC One on 7 November 2021. It was written by showrunner and executive producer Chris Chibnall, and directed by Jamie Magnus Stone.