TODO:
They encounter the gold dragon Aurinax and almost convince him to let them take the treasure. But Victoro Cassalanter interrupts with an army of devils at his side.
Victoro summons a portal to Avernus which sucks up the treasure, Aurinax, together with Vaelle, Skalmold, Punk, and Nithgrea.
In Avernus they are greeted by an angry Tiamat. Skalmold, Punko, and Nithgrea manage to escape back through the portal. But they had to make the difficult choice of leaving a possibly already dead Vaelle. While in Avernus, Nithgrea gets saved by Zariel who tells her she still has a job to do.
In the end they manage to defeat all the demons and make their way back out of the vault. They also pick up a party invitation left behind by Victoro.