When Eithne witnesses the rape and murder of her mother, at the hands of Jarl Heggalund, she is left traumatised.
Rescued by viking traders, led by Harald Harfagre, she is taken from her island home and transported to Norway.
Harald renames her Helga and adopts her as his own. With the help of his wife. Åsa, she is taught the ways of a viking woman.
Helga hates this and rebels.
With the help of her warrior friend Erik, she is taught how to fight, spending every available moment learning the skills of sword and shield.
When Erik and Helga are attacked by a group of men, Erik is seriously wounded, whilst giving Helga time to escape.
Harald and a few trusted men, take Erik to the witch Groa, in an attempt to save his life.
Helga, ravaged with guilt for leaving him to fight alone, begs Cinead to take her to Groa, believing her friend may die soon.
Cinead reluctantly agrees and their journey begins.
How it ends only the gods can decide, and as every viking knows.
The gods can be fickle.