In the game, the leader of the Kayi Turkic Tribe, Ertuğrul Gazi faces off against the invading forces as the external invaders fight to expand their empires across Europe and Asia to the Holy Land, such as the English Crusaders led by future King of England, Edward 1st aka Edward Longshanks aka Hammer of the Scots.

In Medieval Empires' dramatisation of history, the 9th Crusade was more fruitful for Edward Longshanks, opening up another front to the north, where the English crusaders find themselves clashing with Turkic Tribes, among them Ertugrul's Kayi Tribe, in the fragmented and order-less Frontier Region of Turkey. Medieval Empires does not aim to be historically correct. Historical figures, events, tribes, and alliances are adjusted to create more exciting gameplay and engaging storylines.

Soon, more factions in addition to the English Crusaders will be added to create another level of excitement and complexity to the gameplay!