Mawn and Sianan are now consecrated as Druids. They eat the sacred bread of the Faerie folk and drink the holy Water of Life - and thus they embrace eternal life. They will be Wanderers through the endless years, sent as messengers to countless generations to preserve ancient customs and magic.

With Gobann of the Silver Branch, their teacher, and the King and Queen of Munster, they set off to help the Gaels of Scotland in their war against the Saxons. But there is a viper within their party, and an old, hated foe has made strange alliance with the Saxons...