The three countries on Jonas' homeworld have forged a tenative peace, formed a Joint Ruling Council and renamed the planet Langaria (apparently they all had different names for it before.) It isn't the easiest of alliances, though, and Daniel and General Hammond attempt to help them come to a consensus while Carter and Jonas work with Kianna to try to find a solution to the 'naquadria problem.'
"The details are sketchy as to what the problem is, but it sounds as if the instability of naquadria is related to or causing some sort of build-up -- or maybe it's fall-out from whatever they used to defeat Anubis ('Homecoming')? It's on the verge of producing an explosion big enough to turn a third of Kelowna (the nation, not the planet) into a crater. This in turn will throw enough dust and debris up into the atomosphere to throw the planet into a 'nuclear winter' and wipe out all life.
"Hammond and Daniel are trying to convince the councilors to relocate as many people as possible to a friendly planet before this happens. The councilors are still too rooted in their countries' long-held animosity to agree on much of anything, even if it will save lives.
"Meanwhile Jonas, who has fallen for Kianna since he's been home, is proving just how much he has in common with Daniel. Seems he's joined the 'my girlfriend has been taken over by a Goa'uld' club. And the Goa'uld who has taken over Kianna claims to know how to save the planet, if they'll only let her. What the three have been working on is a Jules Verne-type machine that tunnels towards the center of the planet. It seems that they want to tunnel their way to a large deposit of naquadria.
"There are several references to the 'naquadria problem,' and Daniel gets graphic on the expected explosion for the benefit of the councilors to try to stop them from bickering."
The Kelowna folk have not blown themselves to bits, and Jonas is back on his
homeworld working on a Naquadria project. A bunch of diplomatic types come to Earth to ask for our help in moving the project along (probably something that
started in "Homecoming" and/or "Fallen"). Besides the individual nations now getting along, they've renamed their planet, to possibly Langara. But not all is well on the planet as they're facing some kind of devastation which could
induce a nuclear winter on their planet (it appears to have something to do with the naquadria). Daniel appears to stay earthside (not enough info present) to get stuck in meetings with the political guys and Hammond.
The Kelowna folk would like Earth to help them relocate their planet's population, if possible, but are picky about where to relocate to.
Jonas is working on this solving this Naquadria mess along with Kianna, who appears to be his girlfriend as well. Instead of using a digger machine to create tunnels, he'd like to use the Tok'ra method of creating tunnels. Alas, this plan hits a snag when it turns out Jonas has about as good luck in girlfriends as Daniel does: she turns out to be a Gou'ald, who has escaped detection
via some new drug. Sam is working with Jonas in this process
Kianna's Gou'ald personality doesn't want the planet destroyed either; apparently Baal has some nefarious plans for it.
Er, no word on whether Jack is in this episode or not. No tidbits, but that doesn't mean anything.