Time grows short for Queen Elvanna. In a few years, her legendary mother, Baba Yaga, is scheduled to return to Golarion, at which point she'll take Queen Elvanna away and leave a new daughter in her place to rule the frozen nation of Irrisen. Before she loses control of her nation, Queen Elvanna wants to accomplish one final work that will serve as her legacy - something that the world will always remember her by. Yet the key to her plans lies buried under an ancient necropolis - the tomb of a long-dead sister who dared to oppose Baba Yaga and caused a brief but terrible conflict known as the Witchwar, and the only white witch of Irrisen to bear the brand of traitor to that nation. Queen Elvanna has sought out many mercenaries, heroes, and villains to seek out the tomb, yet to date none have returned. Will the PCs serve the White Witch and seek out the Witchwar Legacy within the tomb, or will they step in to oppose her and race against her villainous champions to reach the tomb's inner sanctum first? A wintry wilderness and dungeon adventure for 17th-level characters.