Life in the monastery is simple for Edwin and Luke, two young boys who are training to be monks. It seems that nothing will disrupt the peace and order. Then news arrives that the Vikings have invaded, and they forced to run for their lives. If the Vikings catch them, they will be taken away and become slaves. But with the elders in danger, will they turn back to help them? A Viking story blending Norse mythology with historical fact and Terry Deary's vividly imagined characters.