936 Convent in Normandy. The young abbess finds a wounded warrior on the doorstep. While bandaging the knight's wounds, she is horrified to see on his chest a well-known talisman that reminds her of the past... Once upon a time her name was Gisela. By the will of her father, she was to become the wife of the Viking Rollon. The girl's mother, frightened by her future relationship with a pagan, comes up with a cunning plan: she decides to deceive Rollon and instead of Gisela, marry him to a maid who looks like her daughter. But unexpectedly, chance intervenes in these plans, and Gisela ends up in prison, and then escapes from there with the Viking’s daughter Runa. The girls are in danger at every step, with enemies hot on their heels. And Rollon’s mistress wants to kill her rival at all costs...