There's a framing sequence where Darkwing--for reasons unknown--comes upon a campsite frequented by these really dickish cub-scout types; they are contemptuous of him, but I'm glad to say that he ultimately succeeds in scaring the shit out of them with the terrifying tale of the vampire potato.
Vampire potato? Sounds like Bushroot's back. Already? Hey, I don't mind; I like the guy. The idea is that he wants to make a flower into his ideal bride, but thanks to a mistake on the part of his bumbling man-eating-plant assistant, he makes a potato into a giant vampire creature, who, with the unpleasant sounds she makes, is indeed kind of frightening. He tries to make the best of a bad situation, but she breaks loose and starts infecting people with potato-zombie-hood. Can our hero save the day???
It's a pretty atmospheric, fifties-horror-movie-type episode, a highlight being when Darkwing and Launchpad are picked up while hitchhiking by a creepy Deliverance-y backwoods weasel guy (though there's a bit where the locals are convinced Darkwing's a vampire that goes on perhaps longer than it needs to). However…well, I wouldn't call this hugely dumb, but it's definitely at least a little dumb: DW & Co think they have to chant "potato" backwards to stop the monster, but then they figure out that "you don't say 'potato' backwards; you say 'potato backwards!'" Really, now.
Several milestones in this episode. First, it is, I believe, the first time we hear Darkwing's civilian name, Drake Mallard (we learned about "Mallard" at the end of part two of "Darkly Dawns the Duck," but I'm pretty sure this is the first time "Drake" has come up). Second, we meet Honker's family, though not in any great detail: his father Herb, his mother Binkie (embodying the pervasive fat husband/thin wife trope that's all over TV), and his bullying brother Tank. Plenty of room for growth here.
-"Well, at least I'll have some peace and quiet." "We interrupt your peace and quiet for a special news bulletin."
"There are no vampire potatoes. Scientists who turn themselves into plants, yes, but vampire potatoes, that's ridiculous!"
-Also, the return of Hamburger Hippo!