In 873 AD, political pressures in Norway prompt Eivor Varinsdottir and her adoptive older brother, Sigurd Styrbjornsson, to lead their clan of Vikings to settle new lands in Anglo-Saxon England, as part of the Viking expansion across Europe. The clan comes into conflict with the kingdoms of Wessex, Northumbria, East Anglia, and Mercia over the next several years, as well as the warring sons of the legendary Viking warrior Ragnar Lothbrok, who made up the Great Heathen Army. Eivor's clan faces forces led by the rulers of these kingdoms, including Alfred the Great, the king of Wessex. It is during this time that Eivor meets the Hidden Ones—precursors to the Assassin Brotherhood—and aids them in their fight against the Order of the Ancients—precursors to the Templar Order.[6] Explorable cities in the game include Winchester, London, and York. Parts of Norway and Vinland are also included, while dreamscapes of Asgard and Jotunheim also feature. As with previous games in the series, Valhalla also features a narrative set in the modern day, which follows Layla Hassan, the modern-day protagonist previously featured in Origins and Odyssey. Valhalla also contains story elements related to the Isu, who, as part of the lore of the Assassin's Creed series, are an advanced civilization that pre-date humanity. (Wiki)