The next one after BMO, this time about a glass kingdom, a lava dragon, and P.B. and Marceline.
Apparently P.B. and Marceline have been living for… decades? in Marceline's old house. I guess most of the Candy Kingdom is extinct and doesn't need P.B., but she spends zero time worrying about that, just being a domesticated lesbian wife.
This time the new generation sidekick is not terrible, Glassboy's just a weak kid literally made of cracked glass, but he's brave and not too stupid. See-Through Princess is just vapid, waffling between "hey now don't be mean" and doing meaningless ritual.
Most of the episode is P.B. staring at a force field console, while Marceline goes off on a vision quest to get her angry punk rockness back. And occasionally the flashbacks to Marceline's youth in the mutant wastelands have some pathos, drag this up from dull to "oh that hurts". Marcy's first song is excellent, she doesn't quite rock out—the Pixies she's not—but she's trying. The second one is Lisa Loeb-like.
There's a couple cameos of old characters, which mostly just reminds me of how terrible the last few seasons of AT were, but this was much better than those.
★★★½☆ — Watch this one.