In the fall of 1066, a thirteen-year-old Anglo-Saxon girl named Catla watches from afar as Viking raiders burn her village and imprison her family and the other villagers. No one sees her as she flees toward Aigber, the closest village, praying the people there will help.

Catla must ignore her terror as she makes her way to the standing stones, a place of refuge, where she meets Sven, an older boy from her village. Together, they continue toward Aigber and are able to alert the village of the coming peril. Catla and Sven rally the villagers of Aigber, and with Catla's help, a plan is put in place that will save both villages from the Nord-devils.