Set in the 10th century, the series will chronicle the story of the Viking warrior Erik Bloodaxe and his wife, Gunnhild, during Erik's ascent to the throne of Norway. Xavier Molyneux and Jessica Madsen have been cast in the lead roles of Erik Bloodaxe and the "Mother of Kings" Levi Miller, Karlis Arnolds Avots, Rod Hallett, Alina Tomnikov, Sisse Marie, and Rune Temte joined the main cast in July. Marc Rissmann and Kai Luke Brümmer joined the cast in October in supporting roles.