Planescape: Fallout/The story so far/Session seven

After recovering from the fire mage battle, everyone gears up and heads through the next door, to find Indigo's mother being held hostage by the nefarious Alder, leader of the Crimson Hawks. After a negotiation, the group agrees to bring back Luna from the other side of the portal, with Alder's henchmen tagging along. They troop through a secret door and find a huge wall and a tiny passage, through which Sejik slips with ease, to find a lever and an expired Shad. Zahra interrogates the dead fellow, and discovers he was kidnapped so that he could get them through this room, but that when he refused to leave the hidden alcove, she sucked the air out of the room, asphyxiating him. Sejik returned, pulled the lever, and the wall opened up, revealing the other half of a huge cavern, with a giant stone portal not unlike a Stargate on the far side. Hark turned the stone dials to a symbol known for being associated with dryness and heat, reasoning that such a place might lead to a gate to the plane of fire. When evening matins stared, sure enough, the portal opened in the presence of the runestones, revealing dry, arid steppes. Almost immediately, half of the portal was replaced by a portal to a completely different location--a dark, cold, windswept moor where a surprised group of people holding runestones and a bunch of crates stood blinking at you. The henchmen charged through to attack the crate-bearers, and the group took the opportunity to go through the other half to the steppes.

Once through, Zahra set up trail markers to point the way back, and Sejik summoned some wary but curious mountain lions to talk to. One took him back to his den--nestled on a high plateau next to a giant arch, to get the lay of the land. In the distance, in the middle of a salt flat, leaned an enormous tower.

And that's where we ended!