Two years have passed since the Nestene creature vanished from UNIT's top secret Warehouse... Suddenly and without warning the Nestene strikes, once again using Autons as its deadly foot soldiers. As mysterious UNIT operative Lockwood struggles to unearth the Nestene plan, he finds himself drawn to remote Sentinel Island. There, the population have been caught up in a bizarre frenzy of religious activity. Lockwood is joined by Natasha Alexander, a new scientific advisor with her own, sinister agenda. To defeat the Nestene menace they must both face the terrifying power of a creature from before the dawn of Mankind...

Follows U.S., Canadian, and European scientists from the barrens of Labrador - where archaeologists uncover an ancient stone burial mound - to sites in the U.S., France, England, and Denmark, and to the vast fjords of northernmost Norway where monumental standing stones testify to links among seafaring cultures across immense distances.