The film is described as a Viking saga with a vengeance theme and takes place in Iceland in the late 900s. "Midsummer" producer Lars Knudsen stands as producer. The script has Robert Eggers written together with the Icelandic author Sigurjón Birgir Sigurðsson, known by the pseudonym Sjón.
According to Variety, little brother Bill Skarsgård is rumored to be relevant for a role in the film, as are Willem Dafoe and Anya Taylor-Joy.