In northern Iceland, 1829, Agnes Magnúsdóttir is condemned to death for her part in the brutal murder of two men. She is sent to wait out the months leading up to her execution with the family of a district officer, who avoid contact with her at all costs. Only Tòti, the young assistant priest appointed her spiritual guardian, will listen to her. As the hardships of rural life force the family to work with Agnes, their attitude starts to change - and when she begins her whispered confession one winter night, ...