An epic search for the Amethyst heptagon leads a party of fresh graduates through the northern reaches of Ustalav. Based in Karcau, the party visits places like the dark Castle Jarovich or the dangerous alleys of Carrion Hill.
In 4121 AR, the desert dwarves of the Barrier Wall Mountains sealed the famed Tar-Urkatha mine abruptly, saying only that one of the richest platinum mines in history had played out. Nearly six centuries later, the truth rises from the darkness.
The time for Irrisen's new monarch has come and gone with no sign of the infamous Baba Yaga...and now, winter is encroaching onto all of Golarion! Will our heroes be able to find the fabled Witch-Queen and restore balance to the world?