With a snowstorm on the way, Alex realizes his chances of surviving in Antarctica are dwindling. Sam and Lora are on their way to rescue him, but Stella's presence in Antarctica means there are far greater dangers than the approaching blizzard. To make matters worse, the ancient volcano is about to erupt and every minute counts. With Hans still trapped in the crevasse and Sam and Lora in great danger, Alex must become the rescuer. But he only has time to save one of his friends . . . who will he choose?