Players (lvl 10) are going to get forcibly transported to Dal Quor by a Quori who intends to trap them there via plot magic, how would I structure a 3-4 hr session with the end goal of defeating the Quori?

To elaborate, the players have faced off against this Quori before, and so the Quori has been plotting for a while to get the players out of the way of his insidious plans. He's basically going to trap them in his "dream domain," basically a mind palace, and the goal for the PCs would be to defeat him before they go insane. What encounters (combat & noncombat) should I throw at them?