A young governess is hired by a man to look after his niece and nephew at their family country house after they fall into his care. Soon after arriving at the Bly estate, she begins to experience strange occurrences and a grim history starts to unravel.

Follow-up series to 'Vikings' set 100 years afterward and centering on the adventures of Leif Erikson, Freydis, Harald Hardrada and the Norman King William the Conqueror.