Not a whole lot of plot there, but it was nicely done. To be honest, I've have sat through almost anything just to get to enjoy another hour of Peter Capaldi's Doctor. I'm going to miss him dreadfully, even though I'm really looking forward to Jodie Whitaker too. But Twelve (at least the Twelve in the last two seasons) is the first Doctor I've really, really loved since Nine, and that's hard to let go of.
( Cut for spoilers )
( Cut for spoilers )