A Frosty Mug

In the Lands of the Linnorm Kings, Pathfinders and Ulfen rulers grow concerned about the lack of information coming across the border from Irrisen. A team of Pathfinders is sent to scout a hidden pass into Irrisen and see what they can find out, but they find more than they could have possibly anticipated. With Russian soldiers displaced across worlds and cunning winter witches grasping for power, will the PCs get to raise a frosty mug with new friends, or find themselves in the icy grasp of powerful enemies?