Twenty years later, Ragnar landed in Northumbria and attempted to outdo his sons by planning to conquer the other Anglo-Saxon kingdoms of England, using only two ships. Ragnar Lothbrok, a young Viking leader from Sweden, led a force of 4,000 men to plunder and occupy the city before departing after Frankish king Charles the Bald paid a ransom of 7,000 livres of silver and gold. Over fifty years after the Lindisfarne raid, the Vikings would sail down the Seine to besiege the Carolingian capital of Paris in one of their most ambitious raids yet. A week later, he died under mysterious circumstances. One year after the investigation, he wrote a letter to Charlemagne urging him to steer clear from the Order, unaware that he was a member of the organization. In 803, an Anglo-Saxon scholar known as Alcuin had discovered that the Order had infiltrated the church, intent on corrupting its beliefs. Unbeknownst to his subjects, Charlemagne was also a leader in the Order of the Ancients in spite of his strong Christian beliefs. Charlemagne would create the Carolingian Empire, the director precursor to the Holy Roman Empire. He was then crowned 'Roman Emperor' by Pope Leo III on Christmas Eve in 800.

In Western Europe, Charlemagne helped consolidate and expand the Franks to much of France, Belgium, western Germany and northern Italy. Some would also lend their services to the Byzantine Empire as bodyguards and these Vikings would eventually become known as the Varangians. This became known as the Lindisfarne raid and it marked the beginning of the Viking Age as well as the subsequent expansion across most of Europe from the rivers of Russia to the shores of Ireland over the course of two centuries. Among the participants in this expedition was the ancestor of Juhani Otso Berg who fought and killed a Saxon warrior in combat. In 793, a group of Norse raiders known as the Vikings led a military expedition off the coast of northeastern England. Eventually, they were overthrown by the Abbasids led by Abul Abbas As-Saffah in 750, though one surviving prince Abd al-Rahman I fled to Muslim-controlled Spain to establish the Emirate of Córdoba. The Umayyads were stopped from expanding into Europe any further by Charles Martel of Francia in the Battle of Tours. Soon, this new faith quickly spread across the Middle East and North Africa, even reaching as far as Spain through the rapid expansion of the Umayyad Caliphate after the death of Muhammad in 632. In Arabia, a man by the name of Muhammad created a new religion known as Islam. The Plague of Justinian killed 40% of the population and eventually put an end to Byzantine aspirations of recreating the old Roman Empire after the death of Justinian I in 565. The period also saw a period of cultural resurgence in the Byzantine Empire under the reign of Justinian I from the reconquest of Italy and other lands west by Belisarius to the reconstruction of the Hagia Sophia and the codification of Western law between 527 and 541 CE. Eventually, Arthur's efforts to preserve the Roman and Celtic culture of England proved all for naught as the Anglo-Saxons quickly took control and established the Heptarchy, a collection of seven kingdoms that existed throughout all of England and Wales. Sadly for Arthur, he would grow disillusioned with the Order and he was eventually betrayed by his wife, best friend and son at the Battle of Camlann. At one point, he had placed his sword beneath an Isu structure beneath Stonehenge with an accompanying note hoping that whoever found Excalibur, it would serve them well. Furthermore, Arthur was a member of an Isu religious cabal known as the Order of the Ancients, who would aid him in uniting England against the invading Anglo-Saxons. Amidst the rapid displacement of the native Romano-British population, a young man known as Arthur Pendragon emerged as the leader of the Britons after he pulled Excalibur from the stone which proved that he was the true king of England.

In Northern Europe, the Germanic Angles, Saxons, and Jutes migrated to Great Britain, forming the bulk and foundation of what eventually became the kingdoms of England, Scotland, and Wales. The early period saw the large scale migration of the Germanic peoples into northern and mainland Europe, occupying territories owned by the Roman Empire and forming various new kingdoms including Francia.

Year of medieval period