This story is obviously based on The Eurovision Song Contest. It even refers to The Eurovision Song Contest as the form it originally took, although at some time it became The Interstellar Song Contest.
The word Mavity is mentioned yet again, showing that we’re still in an alternative timeline created by The Fourteenth Doctor and Donna.
We hear about an oppressed and exploited people called the Hellion whose planet has been destroyed to harvest Poppies as a flavouring and stop them from growing there again. The company sponsoring the song contest is the same company who did this. It sounds a bit like native Americans. A group of them want to kill all the viewers using a special frequency piggy backed onto the video broadcast signal!
Susan, the Doctor’s Granddaughter from the First Doctor’s Era, appears in visions that The Doctor has, but I can’t help wondering why this happened. It couldn’t be just from memory, as she looks much older than in the First Doctor’s Era, or even in “The Five Doctors” when we last saw her. There seems to be no in universe explanation. Ncuti Gatwa and the Carole Anne Ford just both wanted it to happen.
A hologram of Graham Norton reveals to The Doctor and Belinda that Earth was destroyed on 24-05-2025 and the Earth influences they see in The Interstellar Song Contest have ben salvaged from its debris. This sounds more or less impossible.
Mrs Flood was in the audience, then at the end when she’s rescued from space we finally learn that her identity is what lots of people have already suggested, although only as one of several alternatives. Mrs Flood is The Rani! She bigenerates, although when The Doctor did it, he mentioned that it was only a myth, so it doesn’t seem very likely this would happen.
However, I think this story is a massive improvement over the previous stories!