Two troubled young adults find themselves key players in a deadly game that spans the 21st century and the Viking Age. Amy, finding it difficult to 'fit in', becomes increasingly obsessed with the virtual reality game Erinland. The VR characters and the mist of Erin begin to invade Amy's dreams and her waking moments. She finds herself drawn into Erinland in 9th century Ireland. Amy becomes part of this mystical world as she joins in the struggle to defeat the Viking raiders. Richard has a complicated home life and feels he doesn't belong anywhere. A series of events finds him desperate and living on the streets, where he finds himself dragged into 9th century Norway by a Viking warrior. Richard finds acceptance with the Vikings and joins them on a colonisation raid to Ireland.