Every 100 years, the Witch Queen Baba Yaga returns to the nation of Irrisen to place a new daughter on the throne, but this time, something has gone wrong. Far to the south, an unseasonable winter cloaks the forest near the village of Heldren with summer snows. When the heroes venture into the wood in search of a missing noblewoman, they discover a magical portal to the frozen land of Irrisen, whose magical winter will soon engulf all of Golarion! The Snows of Summer is a Pathfinder Roleplaying Game adventure for 1st-level characters.