Here's a recap for the two new players.  Everything you need to know (though I may supplement if I think of more):

1) Syrissa is taking you to the ruins, where her sister has been searching for and trying to work a strange device (the Ark).

Syrissa:  Syrissa has just revealed herself to be a (good) medusa-type of creature.  She shields her face with a veil to avoid turning people to stone, and apparently feels guilt for those she turned in the past.  She has two blue vials of liquid that will turn stone to flesh.  Her husband, Edmure, is an old blind man, though Syrissa appears at her prime and has lived hundreds of years or more.

2) The world is currently in its last days before final destruction -- thanks to Kahan, Borimer, Adaran, Grung and the gang accidentally initiating the Kuvlah Tah by taking a golden dragon statuette from a temple.  ;)

3)  That statuette (called Augmantium) is needed to work the Ark, which will take you away from the world before it is destroyed, if you get it to work in time.  (Augmantium is an artifact that radiates an extremely powerful antimagic aura.  It is contained in a box that blocks its power.)

4)  Your world (Tienna) has a sister world (Allevia) that you see up in the sky like a moon.  The Ark will somehow get you from Tienna to Allevia.  (The party has been to Allevia once through a portal, but all that magic was destroyed by Augmantium, leaving the Ark as the only hope to get there now.)

5)  The Kuvlah Tah is a dwarf term for the destruction of the world.  The release of Augmantium destroyed magic that was keeping the world together, thus leading to its inevitable destruction.  So far, earthquakes, floods, and volcanoes have been rampant, with it likely to get much worse in the coming days.

6) Oh, there are also two demons and a death knight tracking your party, so you can't stay too long in one place.  They were also released at the temple when the magic holding them back was destroyed; many other smaller demons were released too, but they did not have the same level of personal vendetta against the party.

7) There are a number of other artifacts too.  All together, they could make a person very powerful.  An evil mage named Tarimar seeks to gather them all, but that is to be resolved in the future (if you survive).

Technically, it was Tarimar that started the Kuvlah Tah when he unleashed Augmantium in the first place. Don't blame it all on us.

Ah, but I love the irony of it.  :)

Side note:  This is the hard part about being a GM.  In my mind, I had planned it so the characters would be in the position to unleash it, but the unexpected happened, and my memory is stuck between what really happened and what I had expected to happen if the story had unfolded like I predicted.  It's like reading two different versions of a story and not remembering months later which one was the real story.

8)  I should also mention that Tarimar has managed to create clones of himself, so even though he has now been defeated twice (once by the party and once by one of the demons), he is not dead yet.  (Cue Monty Python skit.)

This is bumped for the two new players we have.