At the end there is only—darkness.
With only days left in the final countdown, Sam and Eva must brave the dangers of Antarctica to rescue Alex and find the twelfth Dreamer and Gear.
As the world plunges further into chaos, the last 13 prepare to fulfil the prophecy. But all is not as it seems.
An impossible, amazing discovery underneath the ice will bring them all closer to the end of the race, but with betrayal on every side, how can they make it out of there alive?
Sam must unite the last 13. Time is running out.