From the back cover:
An evil scientist strives to complete his ultimate, power-mad plan!
A supremely savage alien criminal awaits his Earthly release!
All this, and the Fearsome Five, too!
Your Player Group must suffer severe Arctic climates and brave the frigid wilderness of the Canadian Klondikes in an adventure to the top of the world.
You build your walls, only to see them crumble in a perilous land of... Fire and Ice!