Brigid is a druid's daughter. Patrick is an enslaved shepherd. Separately, they fight for their freedom until they discover the key to their future is in their past.

When Patrick, a high-born British Roman, is kidnapped by Irish raiders, his life is forever changed. After his attempts to escape slavery fail, Patrick falls under the watchful eye of a local druid who teaches the Christian-raised Patrick about pagan beliefs. On the other side of Ireland, Brigid has been marked as a gifted mage since birth. However, her chief druid suspects her talents run deeper than anyone knows and he forces her into the dangerous Test of the Ancients. Fearful for her life, Brigid runs away, determined to continue her druid training elsewhere.

Brigid and Patrick must decide whether to follow separate paths or join together to restore Ireland to her past glory. They will uncover the stories of their lives and find a connection that transcends time.