SO. Bubba's safely back in the past, and Scrooge, Launchpad, and HDL travel to the island to grab a diamond to pay off Glomgold (once again, the whole thing hinges on this nonsensical plot twist. Bah, I say!). Anyway, oh no, Glomgold and the Beagles have, um, constructed a barricade in front of the diamond cave! What to do! Well, first, we could step back and contemplate the fact that we're expected to swallow the idea that Glomgold can engage in all of this blatantly illegal stuff, right out in the open, and nobody's gonna do anything about it. He can get away with all that, no problem. But his contract with Scrooge, boy--that's iron-clad, and it has to apply no matter what and if Scrooge is late by ONE SECOND with the payment, Glomgold gets everything he wants absolutely no question THE END. I'm reminded of the Phoenix Wright series of "lawyer simulators" on the Nintendo DS, where obviously-guilty witnesses are absolutely free to wildly change their stories as soon as they're caught in a contradiction as many times as they want to until they're absolutely stuck. Only…those games, goofiness aside, generally have ingenious and tightly-plotted stories. Ducktales, not so much.
So anyway, our heroes have to try to find a back entrance to the mine, evading an admittedly pretty damn cool-looking cave monster in the process; meanwhile, big surprise, Bubba in the past wants to return to the present, so he flits around in the time machine, which apparently literally works by magic, if the fact that him drawing a crude picture of Scrooge and pointing a dial at it allows him to immediately hone in on Scrooge at exactly the right time is any indication.
Anyway, they fail to pay off Glomgold in time, but they win anyway, due in no way to effort on their part, as all (that's right, ALL. DO NOT QUESTION IT.) of the diamonds from Flintheart's awesome island rocket over to Scrooge's crappy island. Thanks, again, to magic. Bah. Bring on the accountant with the secret superhero identity, PLEASE.
-"I'm tired of walking around in the dark." "You should be used to that!" Um...burn? I guess?
-So what, Bubba has no tribe? No family? No nothin'? I suppose that makes it easier to justify transplanting him like this, but to just have this be the case with NO explanation seems kind of dubious.