Dæmos Rising

Dæmos Rising is a direct-to-DVD spin-off of the long-running British science fiction television series Doctor Who. It was released direct-to-video and produced by the independent production company Reeltime Pictures. It is a sequel to the Third Doctor serial The Dæmons and the 1995 Reeltime video Downtime and is also a tie-in to Telos Publishing's Time Hunter range of books, another Doctor Who spin-off.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.