From the back of the book:
Baba Yaga has been rescued from the clutches of her son Rasputin, but the Queen of Witches remains trapped inside a magical matryoshka doll. Delving into hidden chambers deep within the Dancing Hut, the heroes must open the nesting dolls imprisoning Baba Yaga, but they must also contend with the hut’s most dedicated guardians, including the former queens of Irrisen. When the time comes to finally face Queen Elvanna inside the Dancing Hut’s innermost sanctum, will the heroes defeat her and free Baba Yaga, or plunge Golarion into a new ice age?
This volume of Pathfinder Adventure Path concludes the Reign of Winter Adventure Path and includes:
• “The Witch Queen’s Revenge,” a Pathfinder RPG adventure for 15th-level characters, by Greg A. Vaughan.
• Ways for you to extend your campaign beyond the covers of this Adventure Path and carry on your adventures against the witches of Irrisen, by Adam Daigle and Rob McCreary.
• An exploration of the mysteries of Baba Yaga and her touch on the world of Golarion and beyond, by Adam Daigle.
• An escape from Whitethrone in the Pathfinder’s Journal, by Kevin Andrew Murphy.
• Four new monsters, by Shaun Hocking, Michael Kenway, Rob McCreary, and Matt Renton.